AIR AROUND US
Properties of Air
Nature Gives – Air | Why Do We need Air?
Science – Air Properties and Experiments
What is the Importance of Air in our life?
Air is important for living things. People need to breathe, and so do lots of other animals—and plants!
Why do we need fresh air?
Help to fight them off with the power of fresh air. It helps your immune system to fight off disease more effectively due to healthier white blood cells. It also supplies your immune system with the oxygen it needs to kill and destroy bacteria, viruses and germs.
Note:- Getting outdoors and connecting with nature is great for the mind and body, as fresh air can make us feel happier and calmer and ready to tackle the day ahead.
You can gather some more information by looking at the videos which is given below:
Air Rhyme
https://www.youtube.com/watch?v=t31N03cNoV8
Flying Happy Animals
https://www.youtube.com/watch?v=7MudGEzbk00
AIR AROUND US
https://www.youtube.com/watch?v=tj5FXnhiggE
https://www.youtube.com/watch?v=jRO9EHp3920
What is Air? | What Does Air Contain?
https://www.youtube.com/watch?v=h7rhOM2dXtE
https://www.youtube.com/watch?v=QPuVBPyYYjs&pbjreload=10
Properties of Air
https://www.youtube.com/watch?v=sj93mlNr0FU
https://www.youtube.com/watch?v=VweKlhcMYPo
Use of Air
https://www.youtube.com/watch?v=Vkjz44-aa14
Importance of Air
https://www.youtube.com/watch?v=mb6DAyfgaX0&pbjreload=10
Air is one of the natural resource from the environment. The air on a plane contains less oxygen than the air we normally breathe in
Importance of Air
Humans, Animals and plants need Air to breath
Note:- Spending hours indoors at school or work can be draining on the mind and can lead us to be less productive and dissatisfied during the day. By sneaking in better ways to find spurts of nature and fresh air throughout the work day, we are better able to boost motivation and energy when back at the school/office and feel happier and less anxious overall.
You can gather some more information by looking at the videos which is given below:
Air Around Us – Introduction
https://www.youtube.com/watch?v=Oz1v5l6vyyc
Properties Of Air
https://www.youtube.com/watch?v=va_nhBcP-38
https://www.youtube.com/watch?v=tvvZ7yZU0X0&pbjreload=10
Characteristics of Air
https://www.youtube.com/watch?v=jTl7ELBizFk
Experiment on Air occupying the space
https://www.youtube.com/watch?v=TbH6X2geknY
Air Transport
https://www.youtube.com/watch?v=qEK0NcjrBg4
Air Transport for Kids- Aeroplane
https://www.youtube.com/watch?v=f8LWLLu8eME
Air Transport for Kids- Helicopter
https://www.youtube.com/watch?v=17vqEAjNKWU
Importance of Air
Air is important for living things. They need to breathe.
Humans and Animals breathe out carbon-dioxide that trees uses and gives out oxygen
Note:- As a certified health coach, to get outdoors and embrace the sunshine and trees each day. Even if you live in a big, city, taking a moment to sit on a park bench or walk into a floral shop can do the trick. Taking a walk and getting a gust of fresh air is great for the lungs, and it can make us feel less stressed and more connected to the world.
You can gather some more information by looking at the videos which is given below:
Characteristics of Air
https://www.youtube.com/watch?v=at6p_Eb1EHU
https://www.youtube.com/watch?v=1NSRcILjuBg
Journey of Air in Human Body -Respiration in human
https://www.youtube.com/watch?v=8QOObtVlyRI
Uses of Air
https://www.youtube.com/watch?v=Qpz_LXWtWFE
Air Transport
Air consists one of the main life sustaining gas called oxygen. Almost all living things breathe in and breathe out this air. Nitrogen and Carbon dioxide are also other gases that are vital for plants and its growth.
Run Outside
Starting the morning off with a run can make us feel less stressed and in a better mood for the day ahead.
Open Your Windows
Open your Windows at home,school or office to let some fresh air in during the day. Take a moment to be mindful and reflect, even.
Plant A Garden
Gardening is extremely relaxing and can reduce stress
Take Lunch at Outdoors
All the day Staying indoors can make you tired, so taking a lunch break outside, it you to feel better mind for the rest of the day ahead,” she adds.
Choosing to join an outdoor sport league or group can both build new, potent relationships and allow you to get more fresh air during the day.
You can gather some more information by looking at the videos which is given below:
Air and It’s Uses
https://www.youtube.com/watch?v=18gSfLhNFZ8
Properties of Air
https://www.youtube.com/watch?v=wLBghFGeFQw
https://www.youtube.com/watch?v=SdaNFg3LOow
10 Health Benefits You Can Get From Fresh Air
https://www.youtube.com/watch?v=PxLEP2oG2H8
Host a Child through The Fresh Air Fund
https://www.youtube.com/watch?v=FU9Z3q9F59s
Air Pollution
The Air we breathe is a picture book designed to introduce Earth’s atmosphere and its importance to life on Earth. It also introduces how the addition of new gases contributes to changing the quality of air we breathe.
With an understanding of how our atmosphere works, we will begin to understand how our activities may be contributing to some of those changes in air quality
Pollution is now a common place term, that our ears are attuned to. We hear about the various forms of pollution and read about it through the mass media. Air pollution is one such form that refers to the contamination of the air, irrespective of indoors or outside. A physical, biological or chemical alteration to the air in the atmosphere can be termed as pollution. It occurs when any harmful gases, dust, smoke enters into the atmosphere and makes it difficult for plants, animals, and humans to survive as the air becomes dirty.
Air pollution can further be classified into two sections:–
Visible air pollution and Invisible air pollution. Another way of looking at air pollution could be any substance that holds the potential to hinder the atmosphere or the well being of the living beings surviving in it. The sustainment of all things living is due to a combination of gases that collectively form the atmosphere; the imbalance caused by the increase or decrease in the percentage of these gases can be harmful to survival.
There are two types of sources that we will take a look at Natural sources and Man-made sources.
Natural sources of pollution include dust carried by the wind from locations with very little or no green cover, gases released from the body processes of living beings (Carbon dioxide from humans during respiration, Methane from cattle during digestion, Oxygen from plants during Photosynthesis). Smoke from the combustion of various inflammable objects, volcanic eruptions, etc along with the emission of polluted gases also makes it to the list of natural sources of pollution.
While looking at the man-made contributions towards air pollution, smoke again features as a prominent component. The smoke emitted from various forms of combustion like in biomass, factories, vehicles, furnaces, etc. Waste used to create landfills generate methane, that is harmful in several ways. The reactions of certain gases and chemicals also form harmful fumes that can be dangerous to the well being of living creatures.
What are the 3 main causes of air pollution?
The burning of fossil fuels. Sulfur dioxide emitted from the combustion of fossil fuels like coal, petroleum and other factory combustibles are one the major cause of air pollution. Pollution emitting from vehicles including trucks, jeeps, cars, trains, airplanes cause an immense amount of pollution.
What are 4 types of air pollution?
The EPA identified six major types of air pollutants deemed especially harmful to human health. These are carbon monoxide, sulfur dioxide, nitrogen oxides, ozone, particulate matter and lead.
Cleaner air for all
Why is it important and what should we do?
Air pollution damages our health and the environment. It is caused mainly by economic activities such as industry, transport, energy and agriculture, as well as some domestic household activities like heating.
The burning of fossil fuels, biofuels, and agricultural crop residues, is the primary source of air pollution. Air pollution is an undesirable side effect of industrialized life and ongoing developments, with immense negative impacts on human health, including increased rate of heart and lung diseases.
Air pollution also damages natural and managed ecosystems, and has a substantial impact on regional and global climate, including disruption of precipitation patterns.
Food and water security is also threatened. Unfortunately, air pollution is often mistakenly thought to be unavoidable, hindering efforts to reduce pollutant levels.
Why does air pollution need to be controlled?
Controlling air pollution. Reducing pollutants in the air is important for human health and the environment. Poor air quality has harmful effects on human health, particularly the respiratory and cardiovascular systems. Pollutants can also damage plants and buildings, and smoke or haze can reduce visibility.
Help Stop Pollution
What measures will you use to keep the air clean?
Here are some simple actions you can take to reduce air pollution and to keep the air cleaner.
How can I get the cleanest air in my home?
Air pollution effects: from Plastic
When plastic is produced, it’s made from toxic materials such as benzene and vinyl hydrochloride. It is destined to be toxic from birth to forever. These chemicals are known to cause cancer, and the manufacturing byproducts contaminate our air and soil.
Burning Plastic: Incineration Causes Air Pollution, Dioxin Emissions, Cost Overruns.
Plastic is Forever
From bottled water alone, the US throws away enough plastic bottles in one week to encircle our planet 5 times! That’s just 5% of the global population.
Globally, we use 160,000 plastic bags every second!
These plastics when thrown in landfills or elsewhere, find their way into our oceans – killing the marine mammals that mistake them for food. This is just the tip of the plastic garbage issue that’s alarming environmentalists these days.
What makes plastic so harmful to humans, animal and plant life and our environment is that they’re non-biodegradable. It only starts degrading in 700 years. This means that all the plastic that has ever been produced has not degraded yet.
Even when it degrades, it doesn’t turn into some other form that gets absorbed by nature. It photo-degrades, which means it only breaks down into smaller toxic bits of itself. It’s forever there. Pollution from plastic affects the air, land and oceans.
What causes air pollution from plastic?
Plastic materials are everywhere. We use plastic bags, straws and plastic bottles for such a short time and then we dispose of it. Yet, they remain forever – toxic till the end.
When plastic is produced, it’s made from toxic materials such as benzene and vinyl hydrochloride. It is destined to be toxic from birth to forever. These chemicals are known to cause cancer, and the manufacturing byproducts contaminate our air and soil. The type of plastic that is the major source of dioxin is PVC.
Phthalates are another toxic chemical added to plastics to make them softer and more pliable. It is known to affect our fertility, disrupt our endocrine glands, birth defects and other health problems. The problem with phthalate is that they are not chemically bound to the products, so they’re easily evaporated into the air. That new “plastic” smell is the smell of phthalates off-gassing. Don’t sniff it!
How you can help stop pollution from plastics
We’d like to say ban plastics! Recycling it is not solving anything. We just turn it into one toxic form to another. But until we find a new material to replace it, the best thing to do is to cut down on the use of plastics. Carry your own bags when shopping. Recycle all your plastics. Keep it away from the landfill and away from the ocean.
It may seem like a small effort but it’s not. Together, we can drastically lower our plastic wastes. When there’s less demand for plastic, there will be a decrease in production too. This is your power as a consumer! You can lessen the demand.
We have created a world littered with plastics in 60 years. With all our technology and with our increasing awareness, we can still turn it around and prevent our children from inheriting a plastic Earth.
You can gather some more information by looking at the videos which is given below:
NEED AIR
https://www.youtube.com/watch?v=B0CGkFmmdA4
Prescription for Kids: Fresh Air. Music. Stories.
https://www.youtube.com/watch?v=SdY2BfgPQRM
Air Pollution
https://www.youtube.com/watch?v=e35xZ2C4x3w
Plastic Pollution
https://www.youtube.com/watch?v=RS7IzU2VJIQ
Stop Pollution – Environmental Song
https://www.youtube.com/watch?v=SlHP-Dv4tGk
Air is an invisible form of matter that flows freely and is in the gaseous state. Scientists described the composition of air and its main properties in such sciences like physics and chemistry. Many gases such as nitrogen, oxygen are present in the air in different proportions. In addition, it also contains gases such as hydrogen, carbon dioxide, carbon monoxide. Air is naturally clean and safe for human and animals, but due to industrialization pollution of the air is increasing which is unsafe for breathing. Therefore, to use clean air and to maintain dust-free breathing, a variety of air filters are widely used.
How is Air useful to us?
It gives us energy and plants get their food from the carbon dioxide present in it… Nitrogen compounds in the form of fertilizers are very useful for trees and plants. Carbon dioxide is used by plants for breathing. The water vapours in the air help to produce rain.
Why do we use air?
It is vital that living things respire to get the oxygen for living cells to function. … Animals including humans need oxygen to live. We breathe in oxygen and breathe out Carbon Dioxide. There are also air pockets in soils and water that help tiny living things survive in water and beneath the soils.
Importance of Air
Air is important for living things.People need to breathe, and so do lots of other animals—and plants! Breathing is part of a process called respiration. During respiration, a living thing takes in oxygen from the air and gives out carbon dioxide
What is Air?
The gaseous mixture in our atmosphere is called air. It includes oxygen, which we breathe and carbon dioxide which we exhale. In fact, it includes every gas that makes up the atmosphere. Colder the temperature, denser the air and vice versa.
What is Wind?
Wind is the horizontal motion of air, due to the pressure difference between two places. Wind is the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction.
But the question arises, why do we get these differences? It’s due to the rising and sinking of air in the atmosphere. Places where air is rising we see lower pressure at the earth’s surface, and where it’s sinking we see higher pressure. On any level surface in Northern Hemisphere, wind always blow keeping low pressure to its left. For instance, when there is low pressure in South India during winter season we get easterly winds, keeping low pressure to its left.
In case there were no rising and sinking motion in the atmosphere, there would be no wind and also no weather.
What is Breeze?
Light wind which has a soothing feeling, especially when it is a warm and sultry day is called breeze. We can simply say that wind blowing at a certain speed is called breeze.
Breeze is a very light wind which we can just feel, while wind blows harder and we can even hear it. Wind and breeze are two sides of the same coin. When it’s soothing we call it breeze and when harsh it is generally referred as wind.
Air Pollution Facts
Everyone on earth knows that air pollution is hazardous to health. The effects of air pollution can have devastating effects on your health and the environment. Here is an interesting way to analyze how air pollution is gradually causing so many deaths worldwide. One may even to fail to count the effects of air pollution and the striking figures floating around this environmental issue.
What is Air Pollution?
According to Wikipedia, “Air pollution is the introduction into the atmosphere of chemicals, particulates, or biological materials that cause discomfort, disease, or death to humans, damage other living organisms such as food crops, or damage the natural environment or built environment“.
Air pollution is a mixture of solid particles and gases in the air. It occurs when the air contains harmful amount of gases, dust, fumes and odour.
Sources and Effects of Common Air Pollutants
Air pollution is a growing problem around the world, with individuals and nations alike pumping enormous volumes of harmful pollutants into the atmosphere every day. These pollutants are not only dangerous to the health and wellbeing of plants, animals, and people, but they are also a major contributor to recent climate shifts observed across the globe.
Cutting down on the volume of pollutants produced is a crucial step in managing our negative effect on the climate. How can this be achieved? One of the first and most important steps is identifying some of the most common and prevalent pollutants, understanding where they come from, and recognizing their effects. This knowledge will help you to identify the key ways in which you can cut down on air pollution and contribute to a global decline in the volume of pollutants found in the air.
Sources and Effects of Common Air Pollutants
Air pollution is a growing problem around the world, with individuals and nations alike pumping enormous volumes of harmful pollutants into the atmosphere every day. These pollutants are not only dangerous to the health and wellbeing of plants, animals, and people, but they are also a major contributor to recent climate shifts observed across the globe.
Cutting down on the volume of pollutants produced is a crucial step in managing our negative effect on the climate. How can this be achieved? One of the first and most important steps is identifying some of the most common and prevalent pollutants, understanding where they come from, and recognizing their effects. This knowledge will help you to identify the key ways in which you can cut down on air pollution and contribute to a global decline in the volume of pollutants found in the air.
Fact 1: Inhaling air pollution takes away at least 1-2 years of a typical human life.
Fact 2: It has effects as small as burning eyes and itchy throat to as large as breathing problems and death.
Fact 3: Pollutants that are released into the air, as opposed to land and water pollutants, are the most harmful.
Fact 4: Rising levels of air pollution in Beijing has brought a new disease – Beijing cough.
Fact 5: Air pollution is not a recent occurrence. In 1952, the Great Smog of London killed 8000 people.
Smog: The atmospheric pollutants or gases that form smog are released in the air when fuels are burnt. When sunlight and its heat react with these gases and fine particles in the atmosphere, smog is formed. It is purely caused by air pollution.
Fact 6: Deaths caused by air pollution cost the European Union €161 billion.
Fact 7: Electric vehicles produce less air pollutants. They stir up dirt but without producing gases.
Fact 8: Producing heavy crude oil increases chances of air pollution by 40% than producing light crude oil.
Fact 9: According to the Lancet journal, air pollution caused by waiting in traffic increases the chances of death caused due to heart attack.
Fact 10: Toxic air pollution poses a greater threat to children, due to their smaller physical size and lung capacity.
Toxic air pollution are substances that cause or may cause cancer or other serious health effects, such as reproductive, birth or developmental defects, and neurological, cardiovascular, and respiratory disease. They can be found in gaseous, aerosol, or particulate forms.
Fact 11: Air pollution and resulting deaths are increasing fastest in Asia.
Fact 12: Air pollution that causes smog affects dolphins and makes them suffer from black lung diseases.
Fact 13: 5,000 premature deaths in Southern California are caused due to pollution from diesel trucks.
Fact 14: Travels at Grand Canyon are unable to see the other side due to air pollution, is 1000 miles away.
Fact 15: 65% of the deaths in Asia and 25% deaths in India are due to air pollution.
Fact 16: The most hazardous pollutants are released from the air and less from the water and land together.
Fact 17: The best ways to reduce air pollution are by walking and riding bicycle.
Fact 18: A single bus carries passengers which are likely to drive 40 cars.
Fact 19: 28% of the Americans believe they are most affected by air pollution caused by vehicles.
Fact 20: Outdoor air pollution outdoor, ranks in the top ten killers on earth.
Fact 21: 2 million cars in Manila, Philippines cause 80% of air pollution.
Fact 22: Air pollution in India is estimated to cause 527, 700 deaths every year.
Fact 23: The number of people who die in America every year due to air pollution is above 50,000.
Fact 24: 80% of lung diseases are caused due to pollution from other cars, buses, trucks and other vehicles.
Fact 25: It is estimated that 750,000 people die in china prematurely due to air pollution.
Fact 26: Research by MIT proves that around 13,000 British citizens die due to air pollution from vehicles and power plants.
Fact 27: 300,000 in China die every year due heart disease and lung cancer cause by air pollution.
Fact 28: People in many cities wear masks continually to save themselves from air pollution.
Fact 29: Heavy crude oil increases air pollution 40% more than light crude oil.
Fact 30: Air pollution caused in traffic increase the chances of heart attack.
Fact 31: During heavy traffic jam, pollutants outside can seep into your car, making the air inside you car 10 times more polluted than typical city air.
Fact 32: Indoor air pollution is 2-5 times worse than the air outdoors.
Fact 33: People who live near high traffic roads face greater risk of cancer, heart disease, asthma and bronchitis as these places contain more concentrated levels of air pollution.
Fact 34: Switching to more efficient and cleaner fuels from solid fuels(wood, biomass) can help you to reduce indoor air pollution.
We can do a lot more to contribute to human happiness by following many little steps. Riding a cycle, using public transport, burning less coal on barbeque are like small steps to create a healthy prosperous environment for the future generations and ourselves. Imagine our little acts can do so much like saving thousands of people who die due to cancer, heart attack or other airborne diseases. The figures are definitely striking. So let your action do some act of heroism and make this world a pollution- free, healthier safer world to live in.
Actions You Can Take to Reduce Air Pollution
You can gather some more information by looking at the videos which is given below:
SCIENCE AIR AROUND US
https://www.youtube.com/watch?v=TbwfkiAXdeA
Wind and Air Pressure
https://www.youtube.com/watch?v=eyjHpbYiRs4
https://www.youtube.com/watch?v=Q83R2Nct0rA
Air Pollution | Video for Kids | Causes, Effects & Solution
Air is an important environment for the breathing of all living things on Earth. It provides oxidation processes that supply the body with the necessary energy.
In addition, it has the widest application in various fields of industry.
Air is a significant supplier of energy: all living plants and animals depend on oxygen to generate valuable energy. Body cells take oxygen from the blood and produce energy after consuming food in the form of ATP. This biochemical generation of ATP is essential to maintain life on the Earth. So, this is one of the uses of air.
Air is a conducting medium for sound: we can hear the sound of speech or noise, etc. only when there is air around us. It happens because that air is a good sound conductor. Without air, we will not be able to hear anything and won’t be able to produce the sounds.
The water cycle occurs with the help of the air: water cycle is a phenomenon of water from the soil, the oceans and seas evaporating due to the heat of the sun and forming clouds. These clouds move towards the land surface, and they are cooled by air and rain. This rainwater once again reaches the sea and ocean.
The pollination of crops also happens due to the air: plants produce male gametes in pollen grains. These pollen grains move from the male flower to the female flower and combine with female gametes. And that exactly what is called pollination. This may occur in flowers growing on the same plant or between remote plants with the help of wind power
The air keeps the balance of the temperature on the Earth’s surface when it’s summer. When the sun strongly heats the Earth’s surface, the surface temperature of the ground is growing rapidly, but it grows slowly on the surface of the ocean or sea (this is because a solid substance is heated faster than liquid water). Thus, the air that is warmed at the Earth’s surface rises up, and cold air from the sea surface transfers to the surface of the ground which minimizes the temperature rise.
Air helps in drying (moisture balance): the ground being wet from the rain dries due to air. The air on a wet surface is very moist. Thus, the moist layers of air are replaced by less humid or dry layers of air. New dry layer on the surface absorbs moisture from the wet surface, and the cycle continues until the surface is dry.
Air also helps us to swim in the water. When our lungs fill up with the air, we can swim higher in the water. When the air is placed in a restricted area, it is known as compressed air. Compressed air is in the tires of cars, bicycles, and planes used in flight mode.
Air reduces pollution: environmental pollution is a major problem since the current way of living leads to different kinds of pollutions. The air helps to minimize the level of environmental pollution.
Wind energy (electricity): the wind can be used to generate electricity with the help of wind turbines installation. Such turbines rotate under the influence of the wind and generate electrical energy. This electrical energy is not polluting and can be generated anywhere on the Earth for domestic use.
Uses of air resources
As a natural resource, the air is very useful, just like water, and it has lots of applications. The most critical aspect of air is that it supports the vitality of all living beings on Earth, providing them with oxygen.
However, oxygen is not only useful for living things. Candles, iron, fire, collected fruits and vegetables tend to change under the influence of oxygen. For example, candles and fire need oxygen to continue to burn. Iron rusts when exposed to water and oxygen. Fruits and vegetables will change colour and eventually become mouldy due to the moisture and oxygen in the air.
Cooking is also a field where the air is used. Bread and cakes are filled with air holes. Due to these holes, they are light and fluffy. Another example is chocolate mousse which also needs air for it to be airy and light. Drinks, in which air is supplied, are called aerated. Soft drink is also an example of a drink that contains air.
Uses of air pressure
The air helps in reducing friction in the tires: the cars are another thing where the importance of air is evident since car tires are filled with air in rubber tubes. With the development of technology, we have self-closing tubes, tubeless tires, etc.
However, these tires are not airless. This happens because the air inflates the tire and this helps to reduce friction. The reduction of friction allows the car to move easily. As we can see, the air is one of the main things in our daily life. We will not be able to do anything without it, and we need air not only for breathing and life support. The air helps us to live in a comfortable environment and a stable temperature.
https://www.youtube.com/watch?v=GJfh7tbLLBU&feature=youtu.be
Why is it important and what should we do?
Air pollution damages our health and the environment. It is caused mainly by economic activities such as industry, transport, energy and agriculture, as well as some domestic household activities like heating.
Air Pollution Damages Our Health And Environment
There is a large body of evidence on the health impacts of air pollution. Increased sickness, such as childhood respiratory diseases
As well as health risks, air pollution causes significant damage to our environment and ecosystems. Ground Level ozone damages agricultural crops, forests and plants, reducing their growth rates. Nitrogen oxides (NOX), sulphur dioxide (SO2) and ammonia (NH3) harm soil, lakes and rivers by acidifying them, causing loss of animal and plant life. Ammonia and NOx also disrupt land and water ecosystems by introducing excessive amounts of nutrient nitrogen – a process known as ‘eutrophication’.
Types of Pollutants
In order to understand the causes of Air pollution, several divisions can be made.
Primarily air pollutants can be caused by primary sources or secondary sources. The pollutants that are a direct result of the process can be called primary pollutants. A classic example of a primary pollutant would be the sulfur-dioxide emitted from factories
Secondary pollutants are the ones that are caused by the intermingling and reactions of primary pollutants. Smog created by the interactions of several primary pollutants is known to be as a secondary pollutant.
Various Causes of Air pollution
Sulfur dioxide emitted from the combustion of fossil fuels like coal, petroleum and other factory combustibles are one the major cause of air pollution. Pollution emitting from vehicles including trucks, jeeps, cars, trains, airplanes cause an immense amount of pollution. We rely on them to fulfill our daily basic needs of transportation.
But, their overuse is killing our environment as dangerous gases are polluting the environment. Carbon Monoxide caused by improper or incomplete combustion and generally emitted from vehicles is another major pollutant along with Nitrogen Oxides, that is produced from both natural and man-made processes.
Ammonia is a very common byproduct from agriculture-related activities and is one of the most hazardous gases in the atmosphere. Use of insecticides, pesticides, and fertilizers in agricultural activities has grown quite a lot. They emit harmful chemicals into the air and can also cause water pollution.
Manufacturing industries release a large amount of carbon monoxide, hydrocarbons, organic compounds, and chemicals into the air thereby depleting the quality of air. Manufacturing industries can be found at every corner of the earth and there is no area that has not been affected by it. Petroleum refineries also release hydrocarbons and various other chemicals that pollute the air and also cause land pollution.
Mining is a process wherein minerals below the earth are extracted using large equipment. During the process dust and chemicals are released in the air causing massive air pollution. This is one of the reasons which is responsible for the deteriorating health conditions of workers and nearby residents.
Household cleaning products, painting supplies emit toxic chemicals in the air and cause air pollution. Have you ever noticed that once you paint the walls of your house, it creates some sort of smell which makes it literally impossible for you to breathe?
Suspended particulate matter popular by its acronym SPM, is another cause of pollution. Referring to the particles afloat in the air, SPM is usually caused by dust, combustion, etc.
Super Easy Ways To Stop Air Pollution
The air that we breathe today is full of toxic and hazardous pollutants. Pollution in the environment could leave mother Earth sapped of its beauty and biodiversity (Biodiversity or Biological diversity is a term that describes the variety of living beings on earth. In short, it is described as degree of variation of life.). Each year millions of people die all around the world due to different pollution related problems. The key to live a healthy life is to identify the sources of air pollution and implement practical ways so that you can help stop air pollution.
If you have been looking to get in on the whole environmental movement, then you’ve likely been trying to look at the various options that you have when it comes to preventing pollution problems from becoming a bigger issue. In this article, we’re going to give you different ideas that you can try out for yourself so that you can contribute to stopping air pollution in your area and in the world around you.
All of us face a variety of risks to our health as we go about our day-to-day lives…. Indoor air pollution is one risk that you can do something about.
– US EPA
36: Grown Your Own Fruits and Vegetables: If you have a lawn at your own backyard, consider starting a garden to grow fruits and vegetables. The fruits and vegetables that you buy from the market have had to travel several miles before reaching your plate. So growing then in your home would be a great way to stop air pollution.
41: Join an Environmental Group: In case you are willing to contribute towards growing pollution in your area, consider joining any environmental group. You can meet people, discuss issues and share ideas on what you can do about it. Spread the work and ask to join in this noble cause.
These, obviously, are not the only ways that you can go ahead and stop air pollution from an even bigger problem than it already is.
You can gather some more information by looking at the videos which is given below:
Air Around Us – Uses of Air
https://www.youtube.com/watch?v=Is9FljdPhH0
Properties of air
https://www.youtube.com/watch?v=rbUoYKhCkiI
What is Air Pollution? Causes & Effects
https://www.youtube.com/watch?v=j9YDMsehsMQ
The 3 R’s for Kids(REDUCE,REUSE,RECYCLE)
https://www.youtube.com/watch?v=TjnNOCbuoCA
5 ways reduce Air Pollution
https://www.youtube.com/watch?v=F1Ozi_mNBBQ
Air is the Earth’s atmosphere. Air around us is a mixture of many gases and dust particles. It is the clear gas in which living things live and breathe. It has an indefinite shape and volume. It has no colour or smell. It has mass and weight, because it is matter. The weight of air creates atmospheric pressure. There is no air in outer space.
Air is a mixture of about 78% nitrogen, 21% oxygen, 0.9% argon, 0.04% carbon dioxide, and very small amounts of other gases. There is an average of about 1% water vapour.
Animals live by aerobic respiration and need to breathe the oxygen in the air. In breathing, the lungs put oxygen into the blood, and send back carbon dioxide to the air. Plants need the carbon dioxide in the air to live. They give off the oxygen that we breathe. Without it we die of asphyxia.
Wind is moving air. This causes weather.
Air can be polluted by some gases (such as carbon monoxide), smoke, and ash. This air pollution causes various problems including smog, acid rain and global warming. It can damage people’s health.
Aircraft use propellers to move air over a wing, which allows them to fly. Pneumatics use air pressure to move things.
What is the purpose of the wind?
Wind powers the voyages of sailing ships across Earth’s oceans. Hot air balloons use the wind to take short trips, and powered flight uses it to increase lift and reduce fuel consumption. Areas of wind shear caused by various weather phenomena can lead to dangerous situations for aircraft.
The wind blows to the south and goes round to the north:, round and round goes the wind, and on its circuits the wind returns. The earth’s atmosphere can be modeled as a gigantic heat engine. It extracts energy from one reservoir (the sun) and delivers heat to another reservoir at a lower temperature (space). In the process, work is done on the gases in the atmosphere and upon the earth-atmosphere boundary. There will be regions where the air pressure is temporarily higher or lower than average. This difference in air pressure causes atmospheric gases or wind to flow from the region of higher pressure to that of lower pressure. These regions are typically hundreds of kilometers in diameter. Solar radiation, evaporation of water, cloud cover, and surface roughness all play important roles in determining the conditions of the atmosphere. The study of the interactions between these effects is a complex subject called meteorology
What are the uses of wind power?
Wind use for Boat sail
Wind is also use to grind wheat
Wind use for electricity generation
A sail is a tensile structure—made from fabric or other membrane materials—that uses wind power to propel sailing craft, including sailing ships, sailboats, windsurfers, ice boats, and even sail-powered land vehicles. Sails may be made from a combination of woven materials—including canvas or polyester cloth, laminated membranes or bonded filaments—usually in a three- or four-sided shape.
A sail provides propulsive force via a combination of lift and drag, depending on its angle of attack—its angle with respect to the apparent wind. Apparent wind is the air velocity experienced on the moving craft and is the combined effect of the true wind velocity with the velocity of the sailing craft. Angle of attack is often constrained by the sailing craft’s orientation to the wind or point of sail. On points of sail where it is possible to align the leading edge of the sail with the apparent wind, the sail may act as an airfoil, generating propulsive force as air passes along its surface—just as an airplane wing generates lift—which predominates over aerodynamic drag retarding forward motion. The more that the angle of attack diverges from the apparent wind as a sailing craft turns downwind, the more drag increases and lift decreases as propulsive forces, until a sail going downwind is predominated by drag forces. Sails are unable to generate propulsive force if they are aligned too closely to the wind.
Sails may be attached to a mast, boom or other spar or may be attached to a wire that is suspended by a mast. They are typically raised by a line, called a halyard, and their angle with respect to the wind is usually controlled by a line, called a sheet. In use, they may be designed to be curved in both directions along their surface, often as a result of their curved edges. Battens may be used to extend the trailing edge of a sail beyond the line of its attachment points.
Other non-rotating airfoils that power sailing craft include wingsails, which are rigid wing-like structures, and kites that power kite-rigged vessels, but do not employ a mast to support the airfoil and are beyond the scope of this article.
A windsport is any type of sport which involves wind-power, often involving a non-rigid airfoil such as a sail or a power kite. The activities can be land-based, on snow, on ice or on water. Windsport activity may be regulated in some countries by aviation/maritime authorities if they are likely to interfere with other activities. Local authorities may also regulate activity in certain areas, especially on crowded beaches and parks.
8 Wind Powered Sports …
Windsurfing is a form of sailing, where a board is powered across the water by the wind.windsurfing uses the wind to propel forward while surfing uses the force of waves.This means you can practice the sport anywhere with a big body of water and wind, such as lakes, rivers, estuaries and, of course, the open ocean.
Windsurfing In The Olympics: An Essential Guide To The Rio 2016 Events, The Rules And Schedule
Windsurfing was once referred to as “surfing’s ginger haired cousin” by the sport’s legend Robby Naish. It grew hugely in popularity during the 1980s when it was estimated that one in every three household in Europe had a windsurf board.
While the sport does resemble surfing, it’s more closely aligned with sailing – windsurfers call themselves sailors and their rules are very similar to sailing racing rules.
Windsurfing is a surface water sport that combines elements of surfing and sailing.
Sailing employs the wind—acting on sails, wingsails or kites—to propel a craft on the surface of the water (sailing ship, sailboat, windsurfer, or kitesurfer), on ice (iceboat) or on land (land yacht) over a chosen course, which is often part of a larger plan of navigation.
A course defined with respect to the true wind direction is called a point of sail.
Surfing is a surface water sport in which the wave rider, referred to as a surfer, rides on the forward or face of a moving wave, which usually carries the surfer towards the shore. Waves suitable for surfing are primarily found in the ocean, but can also be found in lakes or rivers in the form of a standing wave or tidal bore. However, surfers can also utilize artificial waves such as those from boat wakes and the waves created in artificial wave pools.
Skurfing : A surface water sport in which the participant is towed on a surfboard, behind a boat, with a ski rope. It is not a professional sport and has no competitions; it is a freestyle sport with highly individualistic style and form.
Tubing: Tubing, also known as biscuiting, is where a large circular rubber tube is towed behind a boat at fast speeds. The general aim is to hold on as long as possible without falling off due to the boat’s sharp turns; more experienced biscuiters also try to jump the boat’s wake and become airborne.
Water skiing: is a sport/game and recreational activity and is popular in many countries around the world where appropriate conditions exist – an expanse of water unaffected by wave motion. Rivers, lakes, and sheltered bays are all popular for water skiing.
Standard water skis were originally made of wood but now are usually constructed out of fibreglass-based composites. They are of similar length to downhill snow skis but are somewhat wider. Instead of a rigid binding, they have rubber molded binding, in which the skier’s feet are placed. Skiers are pulled along by a rope with a handle fitted at one end and attached to a powerboat at the other.
Wake sports: It is a sport that involves riding a wake while being towed by a motorboat, personal watercraft, close-course cable systems, ski lifts, winches or a crane[3]at speeds of between 30 and 40 mph.
Wakeboarding: The participant is towed on a small board riding a wake produced by the towing boat, and attempts to do tricks. Events are organized by the World Wakeboarding Association.[4] A special wakeboarding boat has a wakeboard tower, which places pull point higher above water’s surface which makes it easier to jump. Wakeboarding boats have a ballast system that pumps water into tanks to increase displacement, and enlarge the wake.
Wakeskating: The main difference between boarding and skating is that in wakeskating the rider is not bound to the board so it’s a lot easier to perform stunts. It’s like skateboarding on water.
Wakesurfing: It differs from other wake sports in that the boat does not tow a rider (continuously). The rider uses a tow rope to help him get up in the wake. After doing so, he drops the rope and then rides the wake as he would when surfing.
Sailing
Sailing specifically refers to the sport of using wind to power sails and propel the boat forward (rather than engines). Unlike windsurfing and surfing, the sport takes place in an enclosed boat rather than on a board. Today it is mostly a recreational activity. There are two types of sailing – racing and cruising
Kite
A kite is a tethered heavier-than-air craft with wing surfaces that react against the air to create lift and drag. A kite consists of wings, tethers and anchors. Kites often have a bridle and tail to guide the face of the kite so the wind can lift it. Some kite designs don’t need a bridle; box kites can have a single attachment point. A kite may have fixed or moving anchors that can balance the kite. One technical definition is that a kite is “a collection of tether-coupled wing sets
The lift that sustains the kite in flight is generated when air moves around the kite’s surface, producing low pressure above and high pressure below the wings. The interaction with the wind also generates horizontal drag along the direction of the wind. The resultant force vector from the lift and drag force components is opposed by the tension of one or more of the lines or tethers to which the kite is attached. The anchor point of the kite line may be static or moving
How to Fly a Kite
https://www.youtube.com/watch?v=QjxJYTEQn6Q
Power kite
https://www.youtube.com/watch?v=HZVCD-Kzu9k
Paragliding
Paragliding is the closest humans can get to the feeling of flying like a bird. It is a fun, safe way to experience flight in its simplest form. You simply lay out a wing on a hillside or mountain, inflate it over your head like a kite, run a few steps and before you know it you’ve stepped off into the sky! Once in the air, a pilot is able to maintain and even gain altitude using lifting air currents and thermals. Landing a paraglider is extremely easy. A pilot simply steers it into the landing area, and glides down for a very gentle touch down back on to earth.
Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched glider aircraft with no rigid primary structure. The pilot sits in a harness suspended below a fabric wing.
Paragliding:
https://www.youtube.com/watch?v=_wC0WT4DPBU
https://www.youtube.com/watch?v=ORNSOi1InuI
Hang gliding
Hang gliding is an air sport or recreational activity in which a pilot flies a light, non-motorised foot-launched heavier-than-air aircraft called a hang glider. … Typically the pilot is in a harness suspended from the airframe, and controls the aircraft by shifting body weight in opposition to a control frame.
Hang gliding is a simple and popular air sport. It is both a recreational and competitive sport closely related to paragliding and gliding (sailplanes), but using a much simpler and less expensive craft consisting of an aluminum- or composite-framed fabric wing, with the pilot mounted on a harness hanging from the wing frame and exercising control by shifting body weight.
How do you make it go?
The pilot launches the machine by running to accelerate to flying speed, then relaxes into the comfortable prone harness while controlling the glider by moving their weight in relation to the control bar. Flying a hang glider is a little more demanding than flying a paraglider, however, the machine is capable of much higher speeds, gliding performance and flyable stronger winds.
Hang gliding
https://www.youtube.com/watch?v=oxwJE33jBwE
https://www.youtube.com/watch?v=lC5lMfniKDw
The difference between a Paraglider and a hang glider?
Paragliding is often confused with Hang Gliding.
Paragliders are non powered aircraft weighing around 12 to 15 kgs, and can be carried in a backpack to any flyable site. It is made of double layer Ribstop Nylon cloth (reinforced and polyurethane coated to make it non porous) with no rigid parts whatsoever. It is Inflated and maintained purely by the movement of air across its surface. The pilot sits below the wing, in a harness that is connected to the wing by suspension lines made of kevlar or De enema. He steers by pulling on one of two lines, known as brake lines.
Hang Gliders too are non-powered aircraft weighing more and bulkier. They are fixed wing aircraft and take more time to rig-up and dismantle and are physically more demanding while training. Being bulky they cannot be carried by one person or put into the boot of a car but need to be strapped onto the roof of a vehicle. The pilot lies in a prone position and manoeuvres with the help of a bar that he holds onto in-flight. Hang Gliders have more speed than paragliders and being rigid can consequently take off in stronger wind conditions.
Hot air ballooning
Hot air ballooning is the activity of flying hot air balloons. … Since the balloon moves with the direction of the winds, the passengers feel absolutely no wind, except for brief periods during the flight when the balloon climbs or descends into air currents of different direction or speed.
Hot Air Balloons are totally dependent on the wind for their movement and interpreting the potential changes of wind direction at various altitudes requires great skill and judgement. In hot air balloon competitions pilots use the shift in the winds at different altitudes to navigate to carefully positioned goals such as 10x10m crosses or road intersections, or to achieve maximum / minimum distances between two fixed points. Each balloon carries a GPS flight recorder and a tracker unit which records the balloon’s position and track. This enables the scorers to download each balloon course and calculate the results. In some competitions this information is transmitted back to the spectators who can then share the excitement of the tasks as the balloons are flying.
During the competition the pilots and crews will complete several days of highly competitive racing with one or two flights each day.
Ballooning
Ballooning is an adventurous air sport which involves flying a hot air balloon. Hot air balloons are known to be used as early as the late 16th century. Ballooning was primarily a recreational activity, but with a steady increase in the number of people taking part, a competitive sport was derived out of it.
Ballooning races are primarily to test the accuracy of flight rather than speed. Fliers are required to judge wind patterns, and direction of the wind at different altitudes. The objective of a race is to navigate the balloons as close as possible to a fixed target point on the ground. When the crew reaches the target, they drop a weighted marker onto the ground. A score is awarded based on the distance between where the marked landed and the target location. The number of targets used will vary between competitions, five targets are mostly used, but some competitions have used more. The aggregate score for all targets is used to decide the winner.
Another popular form of racing is the Hare and Hounds race, in which a hare balloon takes off first, and all the hound balloons follow. The hare will land at any location and a marker from the hound balloons have to be thrown closer to the hare’s landing location to decide the winner.
Hot Air Balloon
https://www.youtube.com/watch?v=JOjyNXNAsJQ
https://www.youtube.com/watch?v=TyV5ebP2CFU
https://www.youtube.com/watch?v=8dwA41WkiV4
Kiteboarding
Kiteboarding is an action sport combining aspects of wakeboarding, snowboarding, windsurfing, surfing, paragliding, skateboarding and sailing into one extreme sport. A kiteboarder harnesses the power of the wind with a large controllable power kite to be propelled across the water, land, or snow.
Kitesurfing is a wind powered surface water sport using a kite and a board to move across the water.
Kitesurfing harnesses the power of the wind through a large parachute type kite to propel a rider across the water on a small surfboard or a kiteboard (similar to a wakeboard).
Although the name includes surfing, kitesurfing does not need waves, the wind is the only force needed to power you along. Flat water locations such as Camber are favoured by riders looking to perform freestyle as the water is smooth so easier to take off and land on. With the large range of conditions to ride in, whether ‘surfing’ in the waves, going for big jumps, taking out a GPS for a speed records, learning a new freestyle trick or on a long distance adventure kitesurfing never becomes boring or repetitive.
Kites with inflatable tubes are used to produce the pull from the wind. The inflatable parts of the kites help hold the shape and also allow the kite to float and therefore be re-launched from the water.
Various sizes of kites are used depending on the wind strength and size of the rider.
Kiteboarding is Awesome
https://www.youtube.com/watch?v=UiTmqRhU4l4
What is Kitesurfing?
Kitesurfing (Kiteboarding) is the natural evolution of extreme wind-powered watersports. Combining traits of windsurf and wakeboard, the powerful Kites and lightweight boards give the kiteboarder higher performance capabilities than ever before. In its short but exciting history kitesurfing has brought together the most exciting components of other extreme sports. The simplicity of the kite-board concept allows every rider the ability to create their own ride styles that reflect their creative imagination and personal expression. With every new move the definitions are changed and the sport continues to expand in possibility. Nobody knows what kiteboarding will look like in the future. But already at the present time kiteboarding has already expanded into snow-kiteboarding and has taken new directions into foil-boarding and landboarding.
What makes a kitesurfer work: The kite surfer flies the kite across the wind to provide traction power through the lines to his kite-control-bar. The rider holds the control bar like a water skier holds the ski-rope handle.The kitesurfer steers the kite by pulling the ends of the kite bar. Pulling left to fly the kite left, and pulling the right side of the bar to steer the kite to the right. The rider wears a harness around their waist and hooks into the kite bar’s harness line. The harness allows the rider to hold the power with the body instead of the arms. So the arms are more easily able to steer the kite. The harness also allows the rider to fly the kite with one hand. The rider has a board that looks like a wakeboard, (or a small surfboard). The rider steers the board by leaning the board with the feet (just like water-skiing or surfing). And by steering the kite to different positions, the rider can sail himself across the wind in both directions, the same way that a sailboat can tack across the wind. A kitesurfer can sail towards the wind (upwind) by making a series of tacks (zig-zags) like a sailboat. The kite surfer has a big kite and very light minimal equipment (no heavy mast or rigging like a boat may have), so this makes the kiteboard equipment very lightweight and fast.
Kitesurfing – How to use the wind
https://www.youtube.com/watch?v=8lJe7bO4fs0
What are the main air pollutants – and where do they come from?
Particulate matter (PM) is fine dust, emitted by road vehicles, shipping, power generation and households, and from natural sources such as sea salt, wind-blown soil and sand. Health concerns focus on particles of less than 10 micrometres (μm) in diameter – especially those of less than 2.5 μm across
Sulphur dioxide (SO2) is emitted by power generation, industry, shipping and households. It harms human health and contributes to acidification of soils and inland waters.
Nitrogen oxides (NOx) are emitted by road vehicles, shipping, power generation, industry and households. They harm human health and contribute to acidification and eutrophication 3. Nitrogen oxides are also one key component in increased levels of ground-level ozone (O3).
Ammonia (NH3) is emitted by livestock farming and the use of fertilisers in agriculture. It harms human health as a building block for so-called secondary PM and contributes to acidification and eutrophication. Volatile organic compounds (VOC) are emitted by the use of solvents in products and industry, road vehicles, household heating and power generation. VOCs are the key component in the formation of ground-level ozone.
Ground-level ozone (O3) is a secondary pollutant produced by chemical reactions of NOx and VOCs in sunlight. It harms human health, the environment, crops and sensitive construction material like metals and paints.
What is Indoor Air Pollution?
Many people, when they think of air pollution, they think about smog and car emissions. This is what is called outdoor air pollution but it is more dangerous when it becomes indoor air pollution. Indoor air pollution occurs when certain air pollutants from particles and gases contaminate the air of indoor areas. These air pollutants can cause respiratory diseases or even cancer. Removing the air pollutants can improve the quality of your indoor air.
Millions of people around the world prepare their meals using traditional methods (i.e. wood, charcoal, coal, dung, crop wastes) on open fires. Such inefficient practices can increase the amount of air pollutants inside the home and can also cause serious health problems.
This type of pollution is significantly more dangerous due to how concentrated the air is in indoor environments. According to recent findings, over 2 million deaths occur every single year due to indoor air pollution. So what can we do about it? That is the question that many ask themselves every single day. Before you can fully comprehend the effects of indoor air pollution you must first be able to understand the causes of it as well as what we can do to improve our quality of air both indoors and outdoors.
Causes of Indoor Air Pollution
Toxic products, inadequate ventilation, high temperature and humidity are few of the primary causes of indoor air pollution in our homes.
You won’t find asbestos as often as you used because newer products do not contain asbestos. However, if you have an old home that was constructed a long time ago, the risks for asbestos are much greater than that of a newer home. Asbestos has been banned in the US and is no longer being used.
Serious Effects of Indoor Air Pollution
Effects of indoor air pollution can be life threatening. Kids and old age people are more prone to the after-effects of indoor air pollution.
7 Easy Ways to Improve Indoor Air Quality
Understanding the causes and effects of indoor air pollution will help you to understand why it should be prevented and what you can do to prevent it yourself. There are various online resources that can help you to discover the best options for you and your family. Making small changes within the home can really make a huge difference. Having your home inspected on a regular basis can really help you to prevent any further damage to not only your home, but you and your family as well.
Air pollution effects: Ozone Layer Depletion
What is the ozone layer?
The Ozone (with chemical formula O3) is a molecule composed of three atoms of oxygen, reason why it is also known as trioxygen. It forms a natural belt or “shield” in the upper atmosphere (at 20 km to 30 km above Earth), also called stratosphere.
This ozone layer protects us from solar ultraviolet (UV) radiation. For this reason, it is considered one of the primary greenhouse gases in the atmosphere, alongside water vapor, carbon dioxide, methane and nitrous oxide.
What is the ozone layer depletion?
Since the beginning of the Industrial Revolution the emissions of carbon dioxide to the atmosphere have massively increased, partially destroying this protection layer and driving to the ozone layer depletion, commonly known as “the ozone hole”.
It is one of the most serious problems faced by our planet earth. Without this protective layer preventing the entrance of ultraviolet radiations with high energy electromagnetic waves, our planet would suffer some issues, such as global warming, and the humanity would have serious difficulties to survive.
The Ozone layer considered crucial for the existence of the ecosystems on the planet is depleting due to increased pollution. Global warming, a direct result of the increased imbalance of gases in the atmosphere has come to be known as the biggest threat and challenge that the contemporary world has to overcome in a bid for survival.
Causes of the destruction of the ozone layer?
About 80% of the total ozone layer depletion is due to the production and emission of chlorofluorocarbons (CFCs). At stratospheric levels, CFCs convert into chlorine, which reacts with ultraviolet rays to destroy ozone on a massive scale. This conversion from CFCs to chlorine is faster at lower temperatures. Other air pollution compounds contributing to the ozone layer reduction are hydrochlorofluorocarbons (HCFCs) and volatile organic compounds (VOCs). Both, maintain stable at lower atmospheric levels and react with sun rays at the stratosphere, just as CFCs do. The emissions of these gases come from aerosols, refrigerants, industrial processes, and obviously from vehicles combustion engines.
Effects of the ozone hole to the environment and health
When high energy electromagnetic waves reach the Earth’s surface, both the planet and humans are exposed to several harmful effects due to the ozone layer depletion.
For humans, direct exposure to UV rays can lead to:
In plants, despite being prepared and adaptable for increasing levels of UVB, ozone layer depletion can cause problems such as: form changes on how nutrients are distributed, on developmental timing phases and on secondary metabolism.
On marine ecosystems, exposure to UVB reduce survival rates of phytoplankton and harm early developmental stages of fish, shrimp, crab, amphibians and other marine animals. Furthermore, short wave ultraviolet B (UVB) sun rays can also alter terrestrial and aquatic biogeochemical cycles.
Ozone layer depletion is obviously one of the main reasons that contribute to global warming, applying over Earth’s surface a greenhouse effect and increasing its temperature. Actions that warm our planet’s surface contribute to climate change, with direct and indirect effects in almost all ecosystems and organisms. This is why the ozone layer is so important, for the Earth, for us!
Ozone layer depletion prevention
To sum up, destructing the ozone layer does not help anyone, we are putting everything and everyone in danger!
Despite the creation of some international laws and agreements to preserve the environment and reduce CFCs emissions (such as Montreal Protocol, Kyoto Protocol, The Paris Agreement and many other national laws), everyone needs to take part and change some habits or with different daily practises. Here are some examples:
Disastrous Effects of Air pollution
The effects of air pollution are alarming. They are known to create several respiratory and heart conditions along with Cancer, among other threats to the body. Several million are known to have died due to direct or indirect effects of Air pollution. Children in areas exposed to air pollutants are said to commonly suffer from pneumonia and asthma.
Another direct effect is the immediate alterations that the world is witnessing due to global warming. With increased temperatures worldwide, increase in sea levels and melting of ice from colder regions and icebergs, displacement and loss of habitat have already signaled an impending disaster if actions for preservation and normalization aren’t undertaken soon.
Harmful gases like nitrogen oxides and sulfur oxides are released into the atmosphere during the burning of fossil fuels. When it rains, the water droplets combine with these air pollutants, becomes acidic and then falls on the ground in the form of acid rain. Acid rain can cause great damage to human, animals, and crops.
Eutrophication is a condition where a high amount of nitrogen present in some pollutants gets developed on sea’s surface and turns itself into algae and adversely affect fish, plants and animal species. The green colored algae that are present on lakes and ponds is due to the presence of this chemical only.
Just like humans, animals also face some devastating effects of air pollution. Toxic chemicals present in the air can force wildlife species to move to a new place and change their habitat. The toxic pollutants deposit over the surface of the water and can also affect sea animals.
Ozone exists in the Earth’s stratosphere and is responsible for protecting humans from harmful ultraviolet (UV) rays. Earth’s ozone layer is depleting due to the presence of chlorofluorocarbons, hydrochlorofluorocarbons in the atmosphere. As the ozone layer will go thin, it will emit harmful rays back on earth and can cause skin and eye related problems. UV rays also have the capability to affect crops.
Encourage people to use more and more public modes of transportation to reduce pollution. Also, try to make use of carpooling. If you and your colleagues come from the same locality and have same timings you can explore this option to save energy and money.
Switch off fans and lights when you are going out. A large number of fossil fuels are burnt to produce electricity. You can save the environment from degradation by reducing the number of fossil fuels to be burned.
Do not throw away items that are of no use to you. In-fact reuse them for some other purpose. For e.g. you can use old jars to store cereals or pulses.
Clean energy technologies like solar, wind and geothermal are on high these days. Governments of various countries have been providing grants to consumers who are interested in installing solar panels for their home. This will go a long way to curb air pollution.
CFL lights consume less electricity as against their counterparts. They live longer, consume less electricity, lower electricity bills and also help you to reduce pollution by consuming less energy.
You can gather some more information by looking at the videos which is given below:
What Makes Fresh Air Fresh?
https://www.youtube.com/watch?v=scl_KhVkRhE
Wind Sports
https://www.youtube.com/watch?v=4Fi4hme32RA
Dream Jump – Dubai 4K
https://www.youtube.com/watch?v=Fhskvloj1gE
Air Pollution
https://www.youtube.com/watch?v=keeQJBkPqPg
What is Ozone Layer?
https://www.youtube.com/watch?v=1b3-l4BxqGA
Why is there a Hole in the Ozone Layer?
https://www.youtube.com/watch?v=putoeGrNVg8
The gaseous mixture in the atmosphere is called air. It includes oxygen, carbon dioxide and nitrogen. Wind is the horizontal motion of air caused by the pressure difference between two places.
What is called wind?
Wind is moving air and is caused by differences in air pressure within our atmosphere. Air under high pressure moves toward areas of low pressure. The greater the difference in pressure, the faster the air flows.
Types of Wind
The winds blowing throughout the year from one latitude to another in response to latitudinal differences in air pressure are called “planetary or prevailing winds”. They involve large areas of the globe.
Two most important prevailing winds are trade winds and westerly winds.
These are extremely steady winds blowing from sub-tropical high pressure areas (30°N and S) towards the equatorial low pressure belt. These winds should have blown from the north to south in Northern Hemisphere and south to north in Southern Hemisphere, but, they get deflected to the right in Northern Hemisphere and to the left in Southern Hemisphere due to Coriolis effect and Ferrel’s law. Thus, they blow as north eastern trades in Northern Hemisphere and south eastern trades in Southern Hemisphere.
They are also known as tropical easterlies, and they blow steadily in the same direction. They are noted for consistency in both force and direction.
These winds blow from sub tropical high pressure belts towards sub-polar low pressure belts. The westerlies of Southern Hemisphere are more stronger and constant in direction than Northern Hemisphere. These winds develop between 40° and 65°S latitudes and these latitudes are known as Roaring Forties, Furious Fifties and Shrieking Sixties.
Periodic winds change their direction periodically with the change in season, e.g., Monsoons, Land and Sea Breezes, Mountain and Valley Breezes.
These winds are seasonal winds and refer to wind systems that have a pronounced, seasonal reversal of direction. According to ‘Flohn’, monsoon is a seasonal modification of general Planetary Wind System.
Summer monsoon is called South Westerly Wind and is characterized by highly variable weather with frequent spells of drought and heavy rains. The winter monsoon is a gentle drift of air in which winds blow from the north-east and is known as North Easterly Wind.
At night, land masses cool quicker than sea due to rapid radiation which results in high pressure over land and low pressure over sea. And in calm, cloudless weather, air blows from land to sea. This breeze carries no moisture and is little warm and dry.
In day time, the land being hotter than the sea develops low air pressure and the sea being cool develops high pressure. The air over land rises and is replaced by a cool breeze known as Sea Breeze from the sea, carrying some moisture.
A diurnal wind occurs in mountainous regions which are similar to Land and Sea Breezes. During the day the slopes of mountains are hot and air from valley flows up the slopes. This is known as “Valley Breeze”. After sunset the pattern is reversed and cold air slides from mountain to valley and is called “mountain breeze”.
The local difference in temperature and pressure causes local winds. It is of four types: hot, cold, convectional and slope.
Wind energy is the environmental pollution free, hazardless and one of the best renewable energy for generation of electric power. The main aim of the paper is “to produce current using multi generator and single rotor”. This paper proposes multi-generator to address potential challenges: dimension, cost and reliability. The two electromagnetic induction generators are desired to share the single shaft through straight bevel gears. These poles of the two generators will be changed as alternate to parallel. This paper discussed about the design procedure of gears, gear life and wind turbine rotors. The output current is stored in series of battery to appliances through converter and step up transformer.
How does wind occur?
Air in Motion. The energy that drives wind originates with the sun, which heats the Earth unevenly, creating warm spots and cool spots. Two simple examples of this are sea breezes and land breezes. Sea breezes occur when inland areas heat up on sunny afternoons
What are the three types of global winds?
The global wind pattern is also known as the “general circulation” and the surface winds of each hemisphere are divided into three wind belts:
WIND MILL
What are the main uses of windmills?
The energy made by windmills can be used in many ways. These include grinding grain or spices, pumping water and sawing wood. Modern wind power machines are used to create electricity. These are called wind turbines.
The majority of modern windmills take the form of wind turbines used to generate electricity, or wind pumps used to pump water, either for land drainage or to extract groundwater.
Why is the windmill important?
They are known as machines driven by wind power. They are constructed to collect the kinetic energy of the wind and their biggest and most important role is that they have the ability to convert wind energy into electricity. Windmills are always working together to force their action to be stronger and more efficient.
How do windmills help us?
Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling. Wind turbines may also reduce the amount of electricity generation from fossil fuels, which results in lower total air pollution and carbon dioxide emissions
Why do farmers use windmills?
Crop Irrigation. Windmills can be used to lift water from the aquifer to directly irrigate crops or to pipe water from one location, such as a reservoir or pond, to a location where water is required. This is direct wind-to-water power, a mechanical means of moving water. … They also share water with their neighbors.”
How does a farm windmill work?
The blades of the windmill wheel catch the wind—just like the sails on a sailboat—which turns the wheel (rotor). The wheel is attached to a shaft by long arms. The shaft has small pinion gears at the other end, inside a gearbox.
Some Windmills Are Still Used For Grain
Today, most windmills are used to generate wind power. But that hasn’t always been the case. Windmills were also used to grind grain into flour. They were originally developed for pumping water, but were quickly adapted for grinding grain.
While it is rare, some windmills are still used to grind grain into flour. One of these windmills can be found in Holland, Michigan. It is called De Zwaan, which is Dutch for “The Swan” or “Graceful Bird.” It is the only authentic, working Dutch windmill located in the United States.
De Zwaan was originally built in the Netherlands in 1761 and was moved to Michigan in 1964 after it had suffered serious damage from World War II. It was the last windmill to leave the Netherlands. It took about six months to reconstruct the mill once it arrived in Michigan.
De Zwaan is now once again an operating and functioning windmill. It is located at Windmill Island Gardens Park in Holland, Michigan and can be toured. It is used to grind grain into flour, which can be purchased at the location or ordered. The flour is ground from a soft white winter wheat grown by West Michigan farmers.
How wind is used to grind grains?
Wind turbines convert kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity. A typical horizontal wind machine is as tall as a 20-story building.
How Do Grain Windmills Work?
Since ancient times, windmills have been used, primarily as a method of grinding grain into flour by using the power of the wind. The original windmills, used in Persia in the 9th century, were vertical-axis mills, but modern windmills use a horizontal axis, in which the blades are fixed to a central post, which is more efficient.
Blades: The blades of the windmill–of which there can be four, five, six or eight–are angled rather like the propeller of an airplane so as to catch the wind, which turns them. A tail fan automatically maneuvers the blades into the direction of the wind. The blades are connected to a drive shaft inside the windmill.
Millstones: The drive shaft has a gear wheel connected to other gears within the wooden hursting frame, which houses the millstones. One millstone is fixed in position and the other is caused to rotate when the drive shaft rotates.
Grain: The grain is poured through a hole in the revolving millstone and the motion grinds it into flour. As more grain is added, the flour is forced out off the side of the millstone, where it falls down a chute and can be collected in sacks.
https://www.greensmill.org.uk/wp-content/uploads/guide-to-greens-mill.pdf Green’s Mill
Air Pollution Facts
Everyone on earth knows that air pollution is hazardous to health. The effects of air pollution can have devastating effects on your health and the environment. Here is an interesting way to analyze how air pollution is gradually causing so many deaths worldwide. One may even to fail to count the effects of air pollution and the striking figures floating around this environmental issue.
What is Air Pollution?
According to Wikipedia, “Air pollution is the introduction into the atmosphere of chemicals, particulates, or biological materials that cause discomfort, disease, or death to humans, damage other living organisms such as food crops, or damage the natural environment or built environment“.
Air pollution is a mixture of solid particles and gases in the air. It occurs when the air contains harmful amount of gases, dust, fumes and odour.
Sources and Effects of Common Air Pollutants
Air pollution is a growing problem around the world, with individuals and nations alike pumping enormous volumes of harmful pollutants into the atmosphere every day. These pollutants are not only dangerous to the health and wellbeing of plants, animals, and people, but they are also a major contributor to recent climate shifts observed across the globe.
Cutting down on the volume of pollutants produced is a crucial step in managing our negative effect on the climate. How can this be achieved? One of the first and most important steps is identifying some of the most common and prevalent pollutants, understanding where they come from, and recognizing their effects. This knowledge will help you to identify the key ways in which you can cut down on air pollution and contribute to a global decline in the volume of pollutants found in the air.
With this in mind, here are some of the most important pollutants to know.
Sources: Most commonly, Carbon Monoxide is produced by combustion engines running without modern catalytic convertors. Other common sources of Carbon Monoxide are old gas and fuel appliances, incinerators, and even cigarettes.
Effects: Carbon Monoxide can have a profound effect on the environment as it is extremely poisonous, and can contribute to very dangerous ground-level air and ozone conditions.
Sources: While efforts have been made to remove lead from fuel, it continues to be present in some aircraft fuel. Similarly, the outpouring of lead from metal processing plants, and the release of lead from waste processes such as incineration and battery acid production means that there is still enough lead in the air to recognize it as a dangerous pollution.
Effects: Lead can not only poison humans, but it also has a profound effect upon natural ecosystems. Contaminating air, soil, and water, lead can cause damage to flora and fauna alike.
Sources: Ground level Ozone is formed by chemical reactions between multiple different oxides found in the air, which – when exposed to sunlight – can form new compounds and leave Ozone as a by-product. The majority of the emissions which make up Ozone come from the usual suspects such as car exhausts, factory processing, electric utilities and power plants, and even some chemical solvents.
Effects: Ozone is a dangerous substance for most living organisms, and as such an increase in ground level Ozone has a notable effect on human health as well as the overall health of multiple ecosystems on land and in the seas.
Sources: Nitrogen Dioxide, like many other pollutants, is most often released into the atmosphere by the burning of fossil fuels in car engines, airplane engines, factories, and power plants.
Effects: In addition to being a choking and obstructive gas in the air, Nitrogen Dioxide also has the propensity to react with other agents to form nitric acid and organic nitrates, contributing to the formation of acid rain.
Needless to say, Nitrogen Oxide has a huge effect on humans, increasing the likelihood of respiratory problems, cancers, and other lung problems. Acid rains produced by Nitrogen Dioxide are extremely harmful to plants and animals across the world, and can lead to further problems in water systems.
Sources: To this day, locomotives, ships, planes, and other equipment still produce huge volumes of Sulfur Dioxide. Industrial processes, particularly ore extraction and purification, are also producers of the gas.
Effects: Sulfur Dioxide, like Nitrogen Dioxide, is a compound which often mixes with other pollutants in the air to form harmful acids, but it is also harmful on its own. Common effects of Sulfur Dioxide poisoning are respiratory problems, eye problems, and even heart and circulatory problems. Importantly, Sulfuric Acid, created by the mixing of sulfur with water, is a potent acid which is not only destructive to human property but also to trees, soils, and water systems.
Sources: Particle matter is produced by nearly every single process involving chemicals and fuels, as well as more innocuous processes such as farming and road construction. Any process which produces a physical byproduct will generally result in particulate matter.
Effects: Particulate Matter ranges from annoying to extremely dangerous, often hampering visibility on roads and causing respiratory problems. Particulate Matter is associated with a range of heart, lung, and eye conditions in humans, and is also linked to an increased likelihood of developing cancers later in life.
While a lot of work has been done to reduce the prevalence of Particulate Matter in the air, it still comprises a considerable risk to public health as well as to environmental integrity. Particulate Matter is especially harmful to animals in the wild, with mammals being disproportionately affected due to their size and comparatively sensitive respiratory systems.
Air pollution effects: From Smog
What is Smog?
Smog is basically derived from the merging of two words; smoke and fog. Smog is also used to describe the type of fog which has smoke or soot in it. Smog is a yellowish or blackish fog formed mainly by a mixture of pollutants in the atmosphere which consists of fine particles and ground-level ozone. Smog which occurs mainly because of air pollution can also be defined as a mixture of various gases with dust and water vapor. Smog also refers to hazy air that makes breathing difficult.
How Smog is Formed?
The atmospheric pollutants or gases that form smog are released in the air when fuels are burnt. When sunlight and its heat react with these gases and fine particles in the atmosphere, smog is formed. It is purely caused by air pollution. Ground level ozone and fine particles are released in the air due to complex photochemical reactions between volatile organic compounds (VOC), sulfur dioxide (SO2) and nitrogen oxides (NOx).
These VOC, SO2, and NOx are called precursors. The main sources of these precursors are pollutants released directly into the air by gasoline and diesel-run vehicles, industrial plants and activities, and heating due to human activities.
Smog is often caused by heavy traffic, high temperatures, sunshine, and calm winds. These are a few of the factors behind an increasing level of air pollution in the atmosphere. During the winter months when the wind speeds are low, it helps the smoke and fog to become stagnate at a place forming smog and increasing pollution levels near the ground closer to where people are respiring. It hampers visibility and disturbs the environment.
The time that smog takes to form depends directly on the temperature. Temperature inversions are situations when warm air does not rise instead stays near the ground. During situations of temperature inversions, if the wind is calm, smog may get trapped and remain over a place for days.
But it is also true that smog is more severe when it occurs farther away from the sources of release of pollutants. This is because the photochemical reactions that cause smog to take place in the air when the released pollutants from heavy traffic drift due to the wind. Smog can thus affect and prove to be dangerous for suburbs, rural areas as well as urban areas or large cities.
The ground level ozone present in the smog also inhibits plant growth and causes immense damage to crops and forests. Crops, vegetables like soybeans, wheat, tomatoes, peanuts, and cotton are subject to infection when they are exposed to smog. The smog results in mortifying impacts on the environment by killing innumerable animal species and green life as these take time to adapt to breathing and surviving in such toxic environments.
Smog is a devastating problem especially due to the fast modernization or industrialization as the hazardous chemicals involved in smog formation are highly reactive is spread around in the atmosphere. Smoke and sulfur dioxide pollution in urban areas is at much lower levels than in the past, as a result of the law passed to control emissions and in favor of cleaner emission technology.
So how should you fight with the forceful impact of smog? It can be reduced by implementing modifications in your lifestyle, decreasing the consumption of fuels that are non-renewable and by replacing them with alternate sources of fuel which will reduce toxic emissions from vehicles.
You can gather some more information by looking at the videos which is given below:
https://www.youtube.com/watch?v=vIp3tuYRFDE&feature=youtu.be (NASA | The Smog Bloggers)
Devastating Effects of Smog
Smog is harmful and it is evident from the components that form it and effects that can happen from it. It is harmful to humans, animals, plants, and nature as a whole. Many people deaths were recorded, notably, those relating to bronchial diseases. Heavy smog is responsible for decreasing UV radiation greatly. Thus heavy smog results in low production of the crucial natural element vitamin D leading to cases of rickets among people.
When a city or town gets covered in smog, the effects are felt immediately. Smog can be responsible for any ailment from minor pains to deadly pulmonary diseases such as lung cancer. Smog is well known for causing irritation in the eye. It may also result in inflammation in the tissues of lungs; giving rise to pain in the chest. Other issues or illnesses such as cold and pneumonia are also related to smog. The human body faces great difficulty in defending itself against the harmful effects of smog.
Minor exposure to smog can lead to greater threats of asthma attacks; people suffering from asthma problems must avoid exposure. Smog also causes premature deaths and affects densely populated areas building it up to dangerous levels. The highly affected people include old people, kids and those with cardiac and respiratory complications as they have an easy tendency to be a disadvantage of asthma.
Main Causes of Smog
Smog-forming pollutants from numerous sources such as factories, consumer products or vehicles are the typical causative factors of smog. In most urban areas, more than 50% of smog is formed in consequence of vehicular emissions. Mostly, the occurrences of smog are associated with the relationship between weather patterns and heavy motor vehicle traffic, industrial and other consumer product emissions. Consumer products include solvents, paints, plastic packaging and sprays.
Smog is of two types: photochemical smog – commonly formed in urban areas and originates from elevated levels of hydrocarbon vapors and nitrogen oxides in the presence of sunlight, and sulfur smog – formed when there is an increased level of sulfur oxides in the atmosphere. Below are the main causes of smog.
Using coal as a fuel
Use of coal as fuel in heating or in power-producing plants discharges high concentrations of sulfur oxides in the atmosphere. The effects are worsened by high levels of suspended particulate matter in the air and dampness. Burning coal also generates significant amounts of smoke which lead to smoggy environments. For instance, coal induced smog has been widely experienced in London up to the middle ages of the 20th century. In China, Harbin, coal-induced smog contributed to the closure of roads, schools, and airport in the autumn of 2013.
Vehicular and industrial emissions
Emissions from the transportation sector resulting from fossil fuel combustion in cars, trucks, buses, motorbikes, and boats are the chief contributors of smog formation. Industries equally emit scores of gaseous emissions and fumes which leads to smog formation. Most of the smog formed in large cities are as a result of traffic emissions.
The primary precursors are oxides of nitrogen, volatile organic compounds, carbon monoxide, fumes, sulfur oxides and hydrocarbons. These substances react with moisture, heat, sunlight, and ammonia among other compounds to form the toxic vapors, particulates, and ground level ozone that make up smog.
Natural causes
Smog can as well occur due to natural causes like volcanic eruption and some specific plant life effects. Volcanic eruption discharges high concentrations of sulfur dioxide and particulate matter in the air, the two primary constituents for smog formation. Radiocarbon amounts of some specific plant life are believed to cause smog in some locations. For instance, the Los Angeles creosote bush is linked to smog occurrences in the area.
Terrible Effects of Smog
Effects on human health
Smog is composed of a mixture of air pollutants which can endanger human health. Various human health problems such as emphysema, asthma, chronic bronchitis, lung infections, and cancers are caused or exacerbated by the effects of smog. The effects include:
Implications for plants and animals
Smog inhibits the growth of plants and can lead to extensive damage to crops, trees, and vegetation. When crops and vegetables such as wheat, soybeans, tomatoes, peanuts, cotton and kales are exposed to smog, it interferes with their ability to fight infections thus increasing susceptibility to diseases.
The smog’s impact of altering the natural environment makes it difficult for animals to adapt or survive in such toxic conditions, which can kill countless animal species or make them susceptible to illness. Photochemical smog caused when nitrogen oxides react in the presence of sunlight, is established to destroy plant life and irritate sensitive tissues of both plants and animals.
Remarkable Solutions to Smog Pollution
Purchase renewable energy
By purchasing renewable energy, it helps in the reduction of emissions from power generating plants that heavily depend on fossil fuel. In other words, the use of renewable energy not only reduces environmental impacts but also trims down the presence of smog causing pollutants in the air.
Reducing and managing vehicular and industrial emissions
Vehicles and industries constitute the largest contributors of smog forming pollutants. The best way to reduce smog is to therefore to take the lead in managing gaseous emissions from cars and industries. For industries, the use of renewable energy sources and the manufacturing of environmentally friendly consumer products are fundamental. For cars; aspects such as combining errands in one trip, use of public transport, proper maintenance of the car and walking or biking instead of driving can significantly reduce smog pollution.
Increasing energy efficiency and conserving energy
Increasing energy efficiency and at the same time conserving energy leads to reduced gaseous emissions into the atmosphere that often result in the formation of smog. A capable and productive energy management system can go a long way in reducing smog causing pollutants in the air such as nitrogen and sulfur oxides.
Use of environmentally friendly consumer products
The use of household products that have high levels of volatile organic compounds should be completely avoided. These products not only release hazardous materials into the atmosphere but also emit particulate matter that reacts in the presence of sunlight to form ground-level ozone. The use of environmentally friendly consumer products such as eco-friendly paints, paper, sprays, solvents and plastics therefore provides a basis for addressing smog pollution.
Smog detection and monitoring systems
As much as smog is easily visible when it’s present in the atmosphere, the use of appropriate smog detectors and monitoring systems can act as early warning systems. Respective metrological departments can help with this by installing monitoring equipment that consistently records the amount of emission and particulate matter in the air.
Such a strategy is the Air Quality Index (AQI) or the Clean Air Act which is used for reporting and monitoring the relative concentrations of common air pollutants and ground-level ozone. Nonetheless, this measure only monitors the levels of the smog causing pollutants in the air and subsequently helps in putting in place strategies that can cut back emissions and air pollution. Preventive measures are the best in the very first place.
How Can I Avoid Exposure to Unhealthy Air?
The AQI is calculated for four major air pollutants regulated by the Clean Air Act: ground-level ozone, particle pollution, carbon monoxide, and sulfur dioxide. You need to take following simple steps to avoid exposure to unhealthy air:
Prolonged Exertion: Prolonged exertion is any outdoor activity that you do intermittently for several hours and may cause you to breather slightly faster than normal. When air is unhealthy outside, you can reduce intake of unhealthy air by reducing how much time you spend on this type of activity.
Heavy Exertion: Heavy exertion means intense outdoor activities that cause you to breathe hard. When air quality is bad outside, you can protect your health by reducing the amount of time you spend on this activity or by substituting it with less intense activity.
What Can You Do To Help Reduce Air Pollution?
So what can you do to help reduce air pollution?
Wind
https://www.youtube.com/watch?v=lJwFK9gZplg
Types of wind: https://www.youtube.com/watch?v=3EegJvxqGek
Air Pollution | National Geographic
https://www.youtube.com/watch?v=e6rglsLy1Ys
Smog
https://www.youtube.com/watch?v=CdbBwIgq4rs
How much does smog and air pollution shorten our lives?
ENERGY FROM WIND
Wind is simple air in motion. It is caused by the uneven heating of the earth’s surface by the sun. Since the earth’s surface is made of very different types of land and water, it absorbs the sun’s heat at different rates. During the day, the air above the land heats up more quickly than the air over water. The warm air over the land expands and rises, and the heavier, cooler air rushes in to take its place, creating winds. At night, the winds are reversed because the air cools more rapidly over land than over water. In the same way, the large atmospheric winds that circle the earth are created because the land near the earth’s equator is heated more by the sun than the land near the North and South Poles. Today, wind energy is mainly used to generate electricity. Wind is called a renewable energy source because the wind will blow as long as the sun shines.
HOW WIND MACHINES WORK
Like old fashioned windmills, today’s wind machines use blades to collect the wind’s kinetic energy. Windmills work because they slow down the speed of the wind. The wind flows over the airfoil shaped blades causing lift, like the effect on airplane wings, causing them to turn. The blades are connected to a drive shaft that turns an electric generator to produce electricity. With the new wind machines, there is still the problem of what to do when the wind isn’t blowing. At those times, other types of power plants must be used to make electricity.
TYPES OF WIND MACHINES
There are two types of wind machines (turbines) used today based on the direction of the rotating shaft (axis): horizontal–axis wind machines and vertical-axis wind machines. The size of wind machines varies widely. Small turbines used to power a single home or business may have a capacity of less than 100 kilowatts. Some large commercial sized turbines may have a capacity of 5 million watts, or 5 megawatts. Larger turbines are often grouped together into wind farms that provide power to the electrical grid.
Horizontal-axis Most wind machines being used today are the horizontal-axis type. Horizontal-axis wind machines have blades like airplane propellers. A typical horizontal wind machine stands as tall as a 20-story building and has three blades that span 200 feet across. The largest wind machines in the world have blades longer than a football field! Wind machines stand tall and wide to capture more wind.
Vertical-axis Vertical–axis wind machines have blades that go from top to bottom and the most common type (Darrieus wind turbine) looks like a giant two-bladed egg beaters. The type of vertical wind machine typically stands 100 feet tall and 50 feet wide. Vertical-axis wind machines make up only a very small percent of the wind machines used today. The Wind Amplified Rotor Platform (WARP) is a different kind of wind system that is designed to be more efficient and use less land than wind machines in use today. The WARP does not use large blades; instead, it looks like a stack of wheel rims. Each module has a pair of small, high capacity turbines mounted to both of its concave wind amplifier module channel surfaces. The concave surfaces channel wind toward the turbines, amplifying wind speeds by 50 percent or more. Eneco, the company that designed WARP, plans to market the technology to power offshore oil platforms and wireless telecommunications systems.
WIND POWER PLANTS
Wind power plants, or wind farms as they are sometimes called, are clusters of wind machines used to produce electricity. A wind farm usually has dozens of wind machines scattered over a large area. The world’s largest wind farm, the Horse Hollow Wind Energy Center in Texas, has 421 wind turbines that generate enough electricity to power 220,000 homes per year. Unlike power plants, many wind plants are not owned by public utility companies. Instead they are owned and operated by business people who sell the electricity produced on the wind farm to electric utilities. These private companies are known as Independent Power Producers. Operating a wind power plant is not as simple as just building a windmill in a windy place. Wind plant owners must carefully plan where to locate their machines. One important thing to consider is how fast and how much the wind blows. As a rule, wind speed increases with altitude and over open areas with no windbreaks. Good sites for wind plants are the tops of smooth, rounded hills, open plains or shorelines, and mountain gaps that produce wind funneling. Wind speed varies throughout the country. It also varies from season to season. In Tehachapi, California, the wind blows more from April through October than it does in the winter. This is because of the extreme heating of the Mojave Desert during the summer months. The hot air over the desert rises, and the cooler, denser air above the Pacific Ocean rushes through the Tehachapi mountain pass to take its place. In a state like Montana, on the other hand, the wind blows more during the winter. Fortunately, these seasonal variations are a good match for the electricity demands of the regions. In California, people use more electricity during the summer for air conditioners. In Montana, people use more electricity during the winter months for heating.
WIND PRODUCTION
In 2006, wind machines in the United States generated a total of 26.6 billion kWh per year of electricity, enough to serve more than 2.4 million households. This is enough electricity to power a city larger than Los Angeles, but it is only a small fraction of the nation’s total electricity production, about 0.4 percent. The amount of electricity generated from wind has been growing fast in recent years. In 2006, electricity generated from wind was 2 1/2 times more than wind generation in 2002. New technologies have decreased the cost of producing electricity from wind, and growth in wind power has been encouraged by tax breaks for renewable energy and green pricing programs. Many utilities around the country offer green pricing options that allow customers the choice to pay more for electricity that comes from renewable sources. Wind machines generate electricity in 28 different states in 2006. The states with the most wind production are Texas, California, Iowa, Minnesota, and Oklahoma. Most of the wind power plants in the world are located in Europe and in the United States where government programs have helped support wind power development. The United States ranks second in the world in wind power capacity, behind Germany and ahead of Spain and India. Denmark ranks number six in the world in wind power capacity but generates 20 percent of its electricity from wind.
WIND AND THE ENVIRONMENT
In the 1970s, oil shortages pushed the development of alternative energy sources. In the 1990s, the push came from a renewed concern for the environment in response to scientific studies indicating potential changes to the global climate if the use of fossil fuels continues to increase. Wind energy is an economical power resource in many areas of the country. Wind is a clean fuel; wind farms produce no air or water pollution because no fuel is burned. Growing concern about emissions from fossil fuel generation, increased government support, and higher costs for fossil fuels (especially natural gas and coal) have helped wind power capacity in the United States grow substantially over the last 10 years. The most serious environmental drawbacks to wind machines may be their negative effect on wild bird populations and the visual impact on the landscape. To some, the glistening blades of windmills on the horizon are an eyesore; to others, they’re a beautiful alternative to conventional power plants.
What is Wind Energy?
Finding green sources of energy in the modern world is steadily increasing due to profound impacts of fossil fuels including global warming, climate change, air quality deterioration, acid rains and oil spills. Solar and wind energy are the two biggest players in the green energy world. Almost everyone understands what solar energy is. However, wind energy is the least explored subject among the populace.
When wind blows, we call it energy from the wind. To understand wind energy better, it would be beneficial to get attuned to its nature and where it stems from. That way, you can be able to recognize the challenges and benefits of utilizing it.
Wind energy is a kind of kinetic energy, or simply energy in motion brought about by the sun’s effect on the atmosphere. Naturally, the sun rays unevenly heat the atmosphere. The entire heating process, in conjunction with the earth’s rotation, produces wind that disperses throughout the different earth surfaces. The same wind can be harnessed to rotate turbines, consequently, generating electricity.
Wind Energy could be converted into the mechanical and electrical energies. It is used in the wind battery charges, wind pumps and wind electricity generators. When it comes to the wind power applications then it could be used to run pumps in order to draw water from grounds via wind mills.
In other words, winds are caused by uneven heating of the atmosphere by the sun, the roughness of the Earth surface and Earth’s rotation. Winds flow patterns are changed by the topography of land, water and plants. Modern wind turbines use this flow of air to generate electricity. We, humans, use this wind flow for various purposes e.g.: generating electricity, drying clothes, sailing etc.
Wind energy today is the cleanest and most reliable way to generate electricity. Wind power neither produces any toxic emissions nor any heat-trapping emissions that contribute to global warming. The fact that wind energy is most widely available, abundant and increasingly cost-competitive energy resources, making it a viable alternative to fossil fuels that harm our health and threaten the environment .
The term wind power describes the process by which wind is used to make the mechanical energy or electricity. Wind turbines convert the kinetic energy of wind energy into mechanical power.
This mechanical power may be used for certain activities (such as milling of rice or pumping water) or a generator can convert mechanical energy to electrical energy at home, business, schools or other facilities.
What are the benefits for wind energy?
It’s a clean fuel source. Wind energy doesn’t pollute the air like power plants that rely on combustion of fossil fuels, such as coal or natural gas, which emit particulate matter, nitrogen oxides, and sulfur dioxide—causing human health problems and economic damages.
How is wind useful to humans?
Wind energy is a source of renewable energy… For these reasons, producing electricity through wind energy and its efficient use contributes to sustainable development. Wind energy does not emit toxic substances or contaminants into the air, which can be very damaging to the environment and to human beings.
How do we use wind energy in everyday life?
Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity to power homes, businesses, schools, and the like.
Should we use wind energy?
Wind energy doesn’t pollute the air like power plants that rely on combustion of fossil fuels, such as coal or natural gas. Wind turbines don’t produce atmospheric emissions that cause acid rain or greenhouse gasses. Wind energy relies on the renewable power of the wind, which can’t be used up.
How Do Wind Turbines Work?
Before we look at how a turbine generates electricity, it would be helpful to know the types and components of a turbine.
Types of Wind Turbines
Modern wind turbines fall into two basic groups; the horizontal-axis rotor, like the traditional farm windmills used for pumping water, and the vertical-axis rotor, like the eggbeater-style Darrieus model, named after its French inventor. Most large modern wind turbines are horizontal-axis turbines.
The most common is the horizontal axis rotor, which quintessentially, comes along with three blades. Three blade turbines operate ‘’upwind” (Blades facing into the wind). A turbine can be installed on land or off the shore in huge water bodies such as lakes and oceans. The offshore wind turbine is a new technology lacking in most countries; however, the countries’ respective energy departments are working around the clock to make the technology available. The United States, nonetheless, recently launched its first offshore turbine.
The following are different variations that come from vertical axis wind turbine systems. Many of these were engineered decades ago and are no longer seen in use today, however the designs for these have been adapted and tweaked such that newer models can be developed that are more efficient with less problems than the older ones.
Wind Turbine Components
Wind turbine systems are made up of many different pieces of equipment that all serve a purpose in delivering electricity where it is intended to go. Of those many different pieces, the below list serves as a general blueprint for the main components that can and often times will be found in wind turbine systems regardless of the type of design.
Advantages of Wind Energy
Wind energy is eco-friendly
Wind energy generates electricity without emission of carbon dioxide, which pollutes the environment and can alter the climate. It’s a clean source of fuel since it produces electricity without the dangerous environmental pollutants that emanate from burning of coal, for instance, sulfur and nitrogen, which can result in mercury, acid rains, and many other pollutants.
Wind energy is relatively inexpensive
The fact that it is renewable makes it a cost effective source of energy in the modern world. Wind energy costs generally range from 4 to 6 cents per kilowatt/hour. This, however, depends on the wind resource and specific financing.
Wind energy has enabled electricity reach in remote locations
The advent of wind power enabled the powering of remote locations, for example, remote countryside and mountain communities, which has led to mushrooming of economic activities.
It’s a steady and reliable source of electricity
Winds are brought about by the sun heating the atmosphere, earth’s surfaces irregularities and earth’s rotation. This, ideally, means that as long as wind blows and the sun shines, energy produced will continually be tapped to produce electricity. When complimented with solar electricity, wind energy is a great resource for both developed and developing countries to guarantee steady and reliable source of electricity.
Wind turbines take up less space
The average power station takes up a lot more space than a wind turbine, meaning, it can be built on existing farm or ranch. This is a great victory for rural dwellers as the economy is boosted. Ranchers and farmers can go on working on their farms since the wind turbine takes up just a fraction of the farm. Individuals or organizations building turbines also remit payments to landowners and ranchers guaranteeing them a form of income.
Wind energy contribute to job creation
According to the Wind Vision Report, over $8 billion of private equity was invested in the U.S. wind sector in 2014 alone. This contributed more than 73, 000 jobs in the economy. By 2050, the same report projects that wind energy will be able to support over 600,000 jobs in different sectors.
Disadvantages of Wind Energy
Wind energy is variable
Not all areas are ideal for wind turbine installation. Wind patterns change every single day (not all days are windy). Because of the variable nature of wind energy, it can’t be relied upon as a sole source of energy.
Wind turbines may interfere with the natural beauty of the landscape and cause noise pollution
Most farmers and ranchers may resist the installation of turbines due to fear that they may affect the natural aesthetics of the surrounding environment. Although turbines have a lot less impact on the environment compared with traditional power plants, concerns remain over noise produced by turbines and visual effects on the landscape. In fact, the noise emanating from commercial turbines can be equated to a small jet engine.
Turbine blades can pose great danger to local bird species
Many reports of bird deaths as a result of hitting spinning blades have been received over the years. The Wind turbine owners and manufacturers have tried to mitigate the problem by correctly siting turbines and embracing technological advancements. Despite all these efforts, bird deaths are still occurring, which threatens to wipe out certain bird species.
The initial infrastructure is costly
It is a fact that remarkable wind sites are situated far away from cities where the most electricity is required. In addition to turbine installation, huge costs of distributing electricity to cities must be met.
Wind energy produce a lot less electricity compared to fossil fuel power station. Although wind energy is a clean source of fuel, fossil fuel still beats it regarding electricity generation capacity.
Wind turbines which are a part of renewable energy has been playing significant role in reducing our dependence on fossil fuels by offering some great solutions to generate electricity. Wind energy produces over 20% of electricity in some countries.
Scientists predict that this percentage will increase in the coming years as more and more countries will allocate part of their budget in increasing their reliance on these renewable energy sources thereby reducing pollution levels and global warming. This is all part of the fight to reduce global warming induced climate change and reduce our dependence on fossil fuels.
You can gather some more information by looking at the videos which is given below:
Introduction to Wind Power
Air pollution effects:
World’s Top 10 Toxic Pollution Problems
Every day synthetic, toxic chemicals are released into the environment. It affects our water, land and air. Water is our most vital resource but also our most threatened. Without water, there is no life. Our land is where we live and thrive upon. The air is what we breathe; what travels through the air is what we inhale. As it ultimately affects the future of our planet and us, it is considered to be a global threat at huge cost to the environment.
The toxic pollution problems discussed below impacts more to the people who live near to the sources of pollution. These pollutants may cause serious health effects such as birth defects, development disorders, respiratory problems, cancer and in some cases can lead to death. Apart from this, it can also have adverse effect on wildlife and environment.
These rechargeable batteries are composed of lead plates and sulphuric acid in a plastic case. The battery recycling business is a very large industry, and although it aims to reduce the number of disposable batteries as solid waste, batteries contain a high number of toxic metals and chemicals like lead oxide that lead to the pollution of our water and contamination of soil.
More than two million people globally are affected by mining and ore processing. These mining sites provide various minerals and metals to produce variety of products and minerals. The most hazardous chemicals that are found near these sites are lead, chromium, asbestos, arsenic, cadmium and mercury.
Though it’s often overlooked, the high levels of mercury in the air are a serious threat to human health. Originating from power plants fired by coal, many of which are located very close to large urban areas and cities in America. It can also travel exceptionally far (as in thousands of miles) through the air. Mercury is extremely damaging to human health as it severely damages the brain and nervous system when inhaled or made contact with. It is also estimated that a high percentage of pregnant woman in America are affected by high mercury levels that affect a foetus brain development. All in all, mercury is one of the most deadly toxic pollutants in the air.
Not only is Sulphur Dioxide (SO2) a substantial pollutant in our air and a direct result of coal power plants, it is also one of the causes of some serious health problems. It can be a root cause of lung cancer, asthma, emphysema, and bronchitis. As a result, thousands of people are tragically hospitalized or die each year. It is seriously toxic to human health. SO2 originates primarily from fossil fuel combustion at power plants and coal power plants.
The production process of retrieving gold from mined ores releases more mercury than any other global sector. The mining process is usually done in the open air, putting people living nearby at risk either through contaminated water or soil. The vaporized mercury is a potent neurotoxic element that causes development disorders and affects the central nervous system.
Each year millions of people are affected by the toxic chemicals, primarily iron, limestone, pyrite and zinc that are released into the air by the dozens of lead smelting sites around the world. Lead smelting uses furnaces and other chemical agents to remove impurity from lead ores. Lead Smelting puts approximately 2.5 million people at risk at 70 polluted lead smelting sites worldwide, according to Blacksmith Institute.
Pesticides are substances necessary for agriculture to destroy targeted pests. An approximate 2 million metric tonnes of pesticides are used annually on fields. As a result, millions of tons of pesticides are dumped every year on our fields. Unfortunately, the health effects pesticides have on us are disastrous, from simple skin irritation to hurting to nervous system to even causing cancer.
Apart from this, stockpiles of old and outdated pesticides add to the trouble. Most of the farmers are illiterate and use expired products. An estimated six to nine million metric tonnes of such pesticides are improperly stored.
Arsenic in Ground Water is naturally occurring pollution problem that affects some 750,000 people, mostly in south Asia. Contaminated groundwater is still used by many people which can lead to cancer, blood vessel damage, abnormal heartbeat and some other ill effects.
Wastewater is water that has been harmfully affected by outside influence and that flows from an open drain. Waste water may or may not be affected by any of the following, but certainly not limited to, batteries, smelting, toxins, organic particles, pathogens, methane and carbon dioxide. This water ends up in the environment where it is much more harmful to humans than irrigation water.
Believe it or not, the dye industry actually contains numerous health hazards. Dye is used to add color to material, but the additions they have to pollution are more than noticeable. While chromium, which is used in dye, is critical to the human diet and generally speaking causes no damage to the human body, Cr IV Chromium is dangerous and highly toxic, enough to cause death in humans.
Chromium is primarily used to turn animal hides into leather for consumers, in places called tanneries, which are primarily centered in South-East Asia. Such tanneries are still operating with little control and produce daily 7.7 million litres of waste water and 88 million tons of solid waste. Again, Cr IV is dangerous and can cause health problems as in respiratory and heart failure and cancer in the brain and kidneys.
Fossil Fuels
Fossil fuels were formed millions of years ago when plants, animals and other creatures died and buried under the earth. Their remains gradually changed over the years due to heat and pressure in the earth’s crust and formed to coal, oil and gas. These are the 3 major forms of fossil fuels and were formed from the organic remains of plants and animals. Since, they took million of years to form, that’s why they are also called as non-renewable energy sources. This means that they cannot be used again once they are expired. Over several years, these decomposed plants and animals were converted into black rock substance called coal and thick liquid called oil or petroleum, and natural gas.
Substances that release energy when burnt are called fuels, and the process of burning is called combustion. Heat is the process that makes the release of energy possible when combustion takes place. A fuel may be a solid, a liquid or a gas and the energy from it may be used either directly, as in warming a house, or indirectly under a boiler to make steam for driving an engine. Sometimes the fuel is burn in the engine.
Much of the fuel used in the world is coal. Coal can be used in lumps or ground to powder and taken through pipes to the furnace as is sometimes done in factory and power station boilers. Wood is important in countries without coal. Charcoal is wood that has been charred by heating in an oven without air and is sometimes used for cooking because it is smokeless. Peat is partly formed coal dug out of bogs and marshes. It burns rather like wood but gives more energy. When it burns, it leads to air pollution which is one of the major disadvantage of fossil fuels.
Formation of fossil fuels took millions of years but they disappear within seconds. They are being extracted from all over the world. Coal is one the fossil fuels that is used extensively in the production of electricity. Oil is used to power our vehicles. We all use fossil fuels in our daily in some or other way. like every other thing, fossil fuels too have negative effect on our environment. Carbon dioxide is on the by product of fossil fuels. When burnt they release carbon dioxide and some other gases. Carbon dioxide is one the primary reason for formation of global warming. We are polluting our environment by extracting these fossil fuels and burning them at fast pace. They can’t be utilized again as they are non-renewable. The solution to the above problems is using renewable energy sources including solar, wind and geothermal.
Examples of Fossil Fuels
Petroleum
The most important fossil fuel comes from petroleum, which is natural oil found underground. It is not much used in its natural state but made into fuels such as petrol, paraffin, kerosene, vaporizing oil and diesel oil. These are obtained through the process called distillation. Benzole is a liquid fuel like petrol obtained when is made into gas. The fuel called natural gas, often found where there is petroleum, is a compound of hydrogen and carbon known as methane.A fuel cell combine hydrogen with oxygen in a way that converts the chemical reaction is the same as if there were combustion. Petroleum is one of the most commonly used fossil fuels. The word means “rock oil”. Petroleum and its products are of great use in today’s life. These products include motor fuels, kerosene, diesel oil, wax etc. petrol, of course is used in motor cars. Kerosene is used in oil lamps, farm tractors, jet engine aircraft etc. In villages, kerosene has a very important usage. Diesel oil is used in diesel engine buses, tractors, Lorries, ships and many more vehicles use it. Lubricants are also made from the by-products of petroleum. This is needed to make machinery of any kind run smoothly and easily. Bitumen is used in asphalt and for waterproofing
Effect of Petroleum: The toxicity of petroleum which contributes to air pollution, acid rain, and various illnesses in humans.Petroleum also fuels climate change, due to the increased greenhouse gas emissions in its extraction, refinement, transport and consumption phases.
What are the health effects of exposure to petroleum products?
Health effects from exposure to petroleum products vary depending on the concentration of the substance and the length of time that one is exposed. Breathing petroleum vapors can cause nervous system effects (such as headache, nausea, and dizziness) and respiratory irritation. Very high exposure can cause coma and death. Liquid petroleum products which come in contact with the skin can cause irritation and some can be absorbed through the skin. Chronic exposure to petroleum products may affect the nervous system, blood and kidneys. Gasoline contains small amounts of benzene, a known human carcinogen. Animals exposed to high levels of some petroleum products have developed liver and kidney tumors. Whether specific petroleum products can cause cancer in humans is not known; however, there is evidence that occupationally exposed people in the petroleum refining industry have an increased risk of skin cancer and leukemia.
A spill that affects a home or business may affect the health of people who live and work there. Thus, every spill or leak should be stopped and cleaned up. Health complaints should be taken seriously.
Individuals who experience health problems that may be related to a petroleum spill should see their family physician or health care provider. Some individuals are more sensitive to petroleum odors and to the effects of exposure than others. The county health department or state health department may be able to help provide additional health information to affected individuals and their doctors.
In situations where the indoor air environment has become contaminated to the extent that strong odors are present or air monitoring indicates serious contamination, homeowners, businesses, and tenants may be advised to relocate until the cleanup is completed. Generally, a DEC inspector or a county health department assessor determine whether relocation is recommended. People, including residential tenants who may not be legally responsible for the spill, can request relocation financial assistance from the Fund to cover reasonable expenses for lodging and meals. The county health department should be contacted for relocation assistance. Concerns about possible exposure via soil or water contamination should also be directed to the county health department (See attached list of county health department contacts).
Prevention of Petroleum Pollution
Why Reduce Petroleum Consumption?
There are health, environmental, and political reasons to reduce petroleum consumption. Sources of health risks from petroleum include pesticides in food, nitrates in groundwater from petroleum-based fertilizers, chemicals leaching from plastics, and MTBE leaking from gasoline storage tanks. The problems of plastics include extreme pollution from production, toxic chemical exposure during use, hazards from fires, and their contribution to the world’s growing solid waste crisis. One category of chemicals used in plastic production, especially PVC and vinyl, is called organochlorines, which are resistant to breakdown and will remain in the environment for decades to come. Scientific studies reveal that these chemicals are linked to severe and widespread health problems, including infertility, immune system damage, impaired childhood development, hormone disruption, cancer and many other harmful effects. Environmental hazards of petroleum use include global climate change from burning petroleum products and oil spills that destroy natural habitats. Oil drilling is one of the main reasons that rainforests around the world are being destroyed. The political effects of petroleum use include manipulation of world markets by governments and large corporations at the expense of the poorest world citizens, and the waging of war in order to control the worlds shrinking oil reserves.
How can we reduce petroleum consumption?
The first step in reducing petroleum consumption is to understand what products are made from petroleum. Petroleum turns up in the ingredients list of more things than most people might be aware of. Here’s a partial list:
Once our awareness has been raised as to the problem of petroleum use and the products in which it is used, the solution does not seem all that easy. Since petroleum is directly or indirectly involved in producing almost everything, nothing less than overall simplification of our lives and buying less of everything is what’s required. The recycling slogan is brought to mind – “reduce, recycle, reuse”. We can begin by reducing the amount of energy we use by driving less, carpooling, turning down our thermostat, turning off lights when not in use, buying energy-efficient appliances, hanging laundry outside to dry, etc. We can buy food in bulk to reduce packaging, grow your own vegetables or buy them at a local farmer’s market to reduce transportation, and buy organic food to reduce the amount of fertilizers and pesticides that are used. Search out simplification and recycling ideas at the library and on the Internet, starting with the links included below.
Find alternatives to petroleum products
There currently exist many alternatives to petroleum and petroleum-based products. Many automobile producers are making electric or natural gas-powered cars. Several now have hybrid gas-electric cars that are marketed to general consumers. There also is a little-known alternative to diesel fuel called “bio-diesel”, which is made out of used vegetable oil and can be burned in diesel cars and in home oil burners. Alternative energy
sources for home heating and electricity generation exist, such as photovoltaic, passive solar, wind turbines, and renewable fuels such as wood pellets and corn. Thanks to electrical deregulation, we can now choose an electricity supplier that provides “green” alternatives. Plastics can be made from substances other than oil – like corn or the hemp plant. Research such products and encourage legislators to support them. Here are some other ideas:
Again, information on these alternatives and more are available at your library and on the Internet. Maybe you’ll be inspired to create a clearinghouse of petroleum-reducing ideas for your community.
Natural Gas
Another important and widely used fossil fuel is natural gas. It is chiefly methane, sometimes known as marsh gas. Natural gas is normally found underground along with petroleum and coal but sometimes occur by it and are pumped out through pipelines. Once pumped out, they are transported to storage areas or for domestic use. It has been a source of domestic gas for many years. Many people use this gas to heat their homes. It contains a strong odor that makes it easy to smell if there is a leak. They produce comparatively little pollution as against other fuel sources. Since, they are in a liquid state, it is easy to transport them through pipelines. The main drawback of this fuel is that it is highly inflammable. The greatest producers of natural gas are United States of America and Russia.
Effect Natural Gas: Cleaner burning than other fossil fuels, the combustion of natural gas produces negligible amounts of sulfur, mercury, and particulates. Burning natural gas does produce nitrogen oxides (NOx), which are precursors to smog, but at lower levels than gasoline and diesel used for motor vehicles. Reductions in these emissions translate into public health benefits, as these pollutants have been linked with problems such as asthma, bronchitis, lung cancer, and heart disease for hundreds of thousands of Americans.
However, despite these benefits, unconventional gas development can affect local and regional air quality. Some areas where drilling occurs have experienced increases in concentrations of hazardous air pollutants and two of the six “criteria pollutants” — particulate matter and ozone plus its precursors — regulated by the EPA because of their harmful effects on health and the environment.Exposure to elevated levels of these air pollutants can lead to adverse health outcomes, including respiratory symptoms, cardiovascular disease, and cancer. One recent study found that residents living less than half a mile from unconventional gas well sites were at greater risk of health effects from air pollution from natural gas development than those living farther from the well sites
Pollution from the Transportation Sector – Natural Gas Vehicles
The transportation sector (particularly cars, trucks, and buses) is one of the greatest contributors to air pollution.
Emissions from vehicles contribute to smog, low visibility, and various greenhouse gas emissions. According to the Department of Energy (DOE), about half of all air pollution and more than 80 percent of air pollution in cities are produced by cars and trucks.Currently, automobile manufacturers are under pressure to produce more environmentally friendly vehicles.
Natural gas can be used in the transportation sector to cut down on these high levels of pollution from gasoline and diesel powered cars, trucks, and buses. According to the EPA, compared to traditional vehicles, vehicles operating on compressed natural gas have reductions in carbon monoxide emissions of 90 to 97 percent, and reductions in carbon dioxide emissions of 25 percent. Nitrogen oxide emissions can be reduced by 35 to 60 percent, and other non-methane hydrocarbon emissions could be reduced by as much as 50 to 75 percent. In addition, because of the relatively simple makeup of natural gas in comparison to traditional vehicle fuels, there are fewer toxic and carcinogenic emissions from natural gas vehicles, and virtually no particulate emissions. Thus the environmentally friendly attributes of natural gas may be used in the transportation sector to reduce air pollution.
Natural gas vehicles represent a growing segment of the transportation sector. According to the Natural Gas Vehicle Coalition, the use of natural gas for vehicles doubled between 2003 and 2009. Over 100,000 natural gas vehicles are currently on US roads. A large portion of those vehicles are transit buses, which account for nearly 62 percent of all natural gas vehicles.
Natural gas is the cleanest of the fossil fuels, and thus its many applications can serve to decrease harmful pollution levels from all sectors, particularly when used together with or replacing other fossil fuels. The natural gas industry itself is also committed to ensuring that the process of producing natural gas is as environmentally-friendly as possible. The Natural Gas Vehicle Coalition has more information regarding natural gas-powered vehicles.
Health effects
While exposure to low levels of natural gas is not harmful, long-term exposure can affect your health. Burning natural gas produces nitrogen oxide, carbon monoxide, and methane. These chemicals can trigger respiratory problems, depression, and decrease the quality of your health. Talk to your doctor if you believe the gas leak is affecting your health
symptoms are due to a gas leak
Gas leaks change the amount of oxygen available. As you breathe in less oxygen, you may start to develop symptoms. If you or others in your family experience sudden and unexplained symptoms, there could be a gas leak in your home.
Here are the symptoms you should look for:
Four steps to reduce natural gas leaks
We are working with scientists, utilities and technology providers to validate new mobile monitoring equipment and develop new scientific methods to translate the data gathered into actionable information. As part of this project, EDF is analyzing methane data collected from specially-equipped Google Street View cars and publishing maps that show both leak location and relative leak size.
More precise and frequent data on the location and relative size of methane leaks will enable gas companies and regulators to better prioritize repairs and infrastructure improvements . This information will also take what has traditionally been a safety issue for utilities and broaden the focus to include not only safety, but also the environmental- and climate-consequences of methane leaks.
By making this information more easily available, gas companies, the public and government officials can better understand the scale of the problem and tackle the problem of how to fix leaks and infrastructure more rapidly and more permanently.
Four steps to reduce natural gas leaks
We are working with scientists, utilities and technology providers to validate new mobile monitoring equipment and develop new scientific methods to translate the data gathered into actionable information. As part of this project, EDF is analyzing methane data collected from specially-equipped Google Street View cars and publishing maps that show both leak location and relative leak size.
More precise and frequent data on the location and relative size of methane leaks will enable gas companies and regulators to better prioritize repairs and infrastructure improvements . This information will also take what has traditionally been a safety issue for utilities and broaden the focus to include not only safety, but also the environmental- and climate-consequences of methane leaks.
By making this information more easily available, gas companies, the public and government officials can better understand the scale of the problem and tackle the problem of how to fix leaks and infrastructure more rapidly and more permanently.
Setting performance goals is important for achieving any objective. That’s why we’re asking gas companies, public utility commissions and other state officials to review current leak repair criteria and establish voluntary reduction targets for those leaks that are not already regulated by state or federal requirements, and to accelerate repair for those leaks that are.
We’re also recommending that companies set these goals over a three-year period — which will bring both necessary attention and resources to this environmental threat — and urging them to publicly report their progress each year, along with any unexpected challenges or opportunities.
The American Gas Association, the trade group representing natural gas utilities, has approved voluntary guidelines that may lead to further emissions reductions.
A great deal of progress can be achieved on a strictly voluntary basis. There are programs in a majority of states to facilitate accelerated risk-based replacement of pipelines in the natural gas distribution system. But stronger legal and regulatory requirements to reduce methane emissions from local distribution systems will ensure more rapid reductions in methane gas released into the environment.
Working together with utilities, state and federal government officials, trade associations and the public, we can strengthen the requirements related to the frequency of methane leak inspections; prioritization and timing of leak repairs; upgrade of mechanical fittings and aging pipelines; and reporting of information to the public.
Securing the financial, technical and human resources necessary to achieve this accelerated pace will be key to achieving this solution.
Coal
Another very important fossil fuel is coal. It is the poor man’s petrol. It has been formed by the deposition of vegetative remains for thousands of years. The fossilized form of the decayed plants and other vegetation has formed coal. Coal is hard black rock solid like substance that need to be dug as compared to oil and natural gas that need to be pumped out. There are huge coal reserved all around the world and it’s easier to find coal then oil or gas.
It is made up of carbon, nitrogen, oxygen, hydrogen and sulphur. There are various methods to dig coal from underground. One of the most popular method is to build a horizontal shaft like system and coal miners travel via lifts or trains to dig the coal deep underground. In United States, coal still produces more than 50% of electricity. Once dug, coal is then shipped to coal power stations by trucks or trains. Coal power stations require huge reserves of coal to generate electricity on a constant basis.
Effects of Coal Mining
Coal is a fossil fuel that’s burned to generate electricity and heat, or liquefied to produce gas and diesel fuel. Coal begins as plant matter that’s trapped underground for centuries, and over time becomes petrified due to lack of exposure to air. What results is a useful but highly controversial rock that, while valuable to human energy production, is nevertheless difficult, expensive and dangerous to obtain — with high costs to the environment and human health. There is much debate whether the environmental effects of coal mining justify its continued use.
Coal and Air Pollution. Air pollution from coal-fired power plants is linked with asthma, cancer, heart and lung ailments, neurological problems, acid rain, global warming, and other severe environmental and public health impacts.
Coal is either extracted from deep inside the earth or removed from its surface. The former is known as underground mining, the latter as strip mining or mountaintop removal. Either process contributes a high level of damage to the environment:
1 Climate Change:High levels of methane, a potent greenhouse gas, is released during the mining process, contributing to the destruction of the ozone layer. Carbon dioxide, another greenhouse gas, is released in the combustion (burning) process, when coal is used to fuel electric generators and steam engines. As a result, global warming is probably one of the most significant and widely-felt environmental effects of coal mining.
2 Radiation:Coal contains trace elements of radium and uranium, which, when released into the environment, can lead to radioactive contamination. While it’s true that these elements occur in small amounts, enough coal is routinely burned at coal processing plants to produce dangerous levels of radioactive waste.
3 Acid Rain:Possibly one of the scariest environmental effects of coal mining is the threat of acid rain. The high acidity of AMD remains in the water supply even through evaporation and condensation, which enables it to stay in the atmosphere and eventually return in the form of “acid rain,” thus perpetuating the cycle of pollution.
4 Toxicity:Coal and coal waste contain heavy metals such as lead, mercury and arsenic, which are highly toxic both to plant and animal life.
5.Fires:Since coal is combustible, the threat of fire is another example of the environmental effects of coal mining. If a fire occurs in a coal bed, it can last for years or even decades, potentially spreading and releasing noxious fumes into the surrounding community.
6 Air Pollution:Coal dust, in addition to being dirty and unpleasant smelling, is dangerous if inhaled over an extensive period of time. People with prolonged exposure to coal dust are at high risk of contracting “Black lung disease,” which left untreated can lead to lung cancer, pulmonary tuberculosis, and heart failure.
7 Water Pollution:Highly acidic runoff from coal stocks and handling facilities, known as acid mine drainage (AMD), infiltrates waterways, contaminating local water supply and affecting the PH balance in the surrounding lakes and streams.
8 Flooding:Coal mining and preparation generates millions of gallons of highly toxic, semi-solid waste called “slurry.” To contain the slurry, dams are often built in between the mountains from where the coal is being mined. There are several documented instances in which slurry dams have failed, resulting in deadly floods and ensuing environmental disaster.
9 Topographical Alteration:Coal mining irreparably damages plant life and soil, creating barren patches of land that are not only aesthetically unpleasing but contribute to loss of valuable topsoil, erosion and dust storms.
10 Sink Holes:Another environmental effect of coal mining is “mine subsidence” — the earth sinking as a result of a disturbance to its foundation. This occurs when the coal deep below our planet’s surface is removed from its bed.
11 Loss Of Wildlife:Coal mining requires a large expanse of territory. When a mining operation moves in, it invades and destroys sizable ranges of wilderness area, displacing the native fauna and removing habitat and food sources. This eventually results in an imbalanced ecosystem — and even the endangerment or extinction of entire species.
12.Noise pollution: One of the most obvious (albeit perhaps least harmful) environmental effects of coal mining is noise pollution. Coal mining is a loud, day- and night-long process that disrupts the lives of those in the surrounding communities, reduces the quality of life and can go on for decades.
Effects of Coal Mining
Coal is a fossil fuel that’s burned to generate electricity and heat, or liquefied to produce gas and diesel fuel. Coal begins as plant matter that’s trapped underground for centuries, and over time becomes petrified due to lack of exposure to air. What results is a useful but highly controversial rock that, while valuable to human energy production, is nevertheless difficult, expensive and dangerous to obtain — with high costs to the environment and human health. There is much debate whether the environmental effects of coal mining justify its continued use.
Coal and Air Pollution. Air pollution from coal-fired power plants is linked with asthma, cancer, heart and lung ailments, neurological problems, acid rain, global warming, and other severe environmental and public health impacts.
Coal is either extracted from deep inside the earth or removed from its surface. The former is known as underground mining, the latter as strip mining or mountaintop removal. Either process contributes a high level of damage to the environment:
1 Climate Change:High levels of methane, a potent greenhouse gas, is released during the mining process, contributing to the destruction of the ozone layer. Carbon dioxide, another greenhouse gas, is released in the combustion (burning) process, when coal is used to fuel electric generators and steam engines. As a result, global warming is probably one of the most significant and widely-felt environmental effects of coal mining.
2 Radiation:Coal contains trace elements of radium and uranium, which, when released into the environment, can lead to radioactive contamination. While it’s true that these elements occur in small amounts, enough coal is routinely burned at coal processing plants to produce dangerous levels of radioactive waste.
3 Acid Rain:Possibly one of the scariest environmental effects of coal mining is the threat of acid rain. The high acidity of AMD remains in the water supply even through evaporation and condensation, which enables it to stay in the atmosphere and eventually return in the form of “acid rain,” thus perpetuating the cycle of pollution.
4 Toxicity:Coal and coal waste contain heavy metals such as lead, mercury and arsenic, which are highly toxic both to plant and animal life.
5.Fires:Since coal is combustible, the threat of fire is another example of the environmental effects of coal mining. If a fire occurs in a coal bed, it can last for years or even decades, potentially spreading and releasing noxious fumes into the surrounding community.
6 Air Pollution:Coal dust, in addition to being dirty and unpleasant smelling, is dangerous if inhaled over an extensive period of time. People with prolonged exposure to coal dust are at high risk of contracting “Black lung disease,” which left untreated can lead to lung cancer, pulmonary tuberculosis, and heart failure.
7 Water Pollution:Highly acidic runoff from coal stocks and handling facilities, known as acid mine drainage (AMD), infiltrates waterways, contaminating local water supply and affecting the PH balance in the surrounding lakes and streams.
8 Flooding:Coal mining and preparation generates millions of gallons of highly toxic, semi-solid waste called “slurry.” To contain the slurry, dams are often built in between the mountains from where the coal is being mined. There are several documented instances in which slurry dams have failed, resulting in deadly floods and ensuing environmental disaster.
9 Topographical Alteration:Coal mining irreparably damages plant life and soil, creating barren patches of land that are not only aesthetically unpleasing but contribute to loss of valuable topsoil, erosion and dust storms.
10 Sink Holes:Another environmental effect of coal mining is “mine subsidence” — the earth sinking as a result of a disturbance to its foundation. This occurs when the coal deep below our planet’s surface is removed from its bed.
11 Loss Of Wildlife:Coal mining requires a large expanse of territory. When a mining operation moves in, it invades and destroys sizable ranges of wilderness area, displacing the native fauna and removing habitat and food sources. This eventually results in an imbalanced ecosystem — and even the endangerment or extinction of entire species.
12.Noise pollution: One of the most obvious (albeit perhaps least harmful) environmental effects of coal mining is noise pollution. Coal mining is a loud, day- and night-long process that disrupts the lives of those in the surrounding communities, reduces the quality of life and can go on for decades.
Reducing the environmental effects of coal use
The Clean Air Act and The Clean Water Act require industries to reduce pollutants released into the air and water.
The coal industry has found several ways to reduce sulfur and other impurities from coal. The industry has also found more effective ways of cleaning coal after it is mined, and some coal consumers use low sulfur coal.
Power plants use flue gas desulfurization equipment, also known as scrubbers, to clean sulfur from the smoke before it leaves their smokestacks. In addition, the coal industry and the U.S. government have cooperated to develop technologies that can remove impurities from coal or that can make coal more energy efficient, which reduces the amount of coal that is burned per unit of useful energy produced.
Equipment intended mainly to reduce SO2, NOx, and particulate matter can also be used to reduce mercury emissions from some types of coal. Scientists are also working on new ways to reduce mercury emissions from coal-burning power plants.
Research is underway to address emissions of carbon dioxide from coal combustion. One method is carbon capture, which separates CO2 from emissions sources and recovers it in a concentrated stream. The CO2 can then be injected underground for permanent storage, or sequestration.
Reuse and recycling can also reduce the environmental effects of coal production and use. Land that was previously used for coal mining can be reclaimed and used for airports, landfills, and golf courses. Waste products captured by scrubbers can be used to produce products such as cement and synthetic gypsum for wallboard.
Summary
Fossil fuels have been serving as the source of energy for almost all practical purpose of today’s life. They are inevitable in all domestic purposes like cooking, transportation and have many other advantages. However, these are all non-renewable sources of energy. This means there is a limited stock of this fossil fuel. With the increase in population and consequently their consumption, the stock of fossil fuel seems to be approaching its end
Every year millions of tonnes of coal and gallons of oil is used to extract energy from them. The extraction process is done by burning these fossil fuels. Due to the combustion of these fuels, the environment gets highly polluted. The constituents of fossil fuels are sulphur and nitrogen. They are produced in their oxide forms and cause the pollution. This led to the global warming and extinction of these precious resources. Another effect of this is that when coal is dug from the coal mines, it affects the surrounding ecosystem and pose serious hazard to the health of mine workers. However, they are still popular as they are cheaper than any other alternative sources of energy.
Advantages of Fossil Fuels
Cheap source of energy
Statistically, fossil fuels are some of the cheapest sources of fuel on the planet. Although the process of extraction and refinement is relatively expensive, the return on investment is pretty remarkable. Today, innovative technologies are available that can extract fossil fuels with high degree of efficiency, substantially reducing the overall cost. In fact in the modern day, extraction of fossil fuels is cheaper than installing wind and solar technologies.
Safe to transport
Because fossil fuels are safe and stable, they can be transported easily and efficiently over long distances. They can be transported on large trucks or pumped through large pipes below and above the ground. We all know that these transportation methods are not costly. However, the same cannot be said about the nerve-racking nuclear energy. Every stage of its development is risky, making it the most unsafe form of energy to handle or transport.
Massive economic benefits
It’s a no-brainer that fossil fuels mightily contribute to a country’s prosperity. If you look at the economies of oil and gas producing countries, you will see a common trend; economic prosperity. Government subsidies to oil firms range in billions of dollars, and the contribution to the growth of a country are more than convincing. If you start considering how many countries across the world greatly rely on fossil fuels, the number of industries powered by them and the number of products that would not be available right now without them, you begin to understand just how fossil fuels have permeated our day-to-day life.
Completely stable
Fossils fuels contain carbon and hydrogen molecules, making them highly stable. The constant state of their molecular composition also makes them easy to store. They don’t form other compounds when stored in cans for longer periods. This is also the reason why transporting them is a lot easier and safer than other kinds of fuel.
Useful by product
Typically, the byproducts of fossil fuels do not stir enthusiasm. What most people do not comprehend is that plastics are handy byproducts of fossil fuels. They might not be good for the environment, but they are useful and cheap. Plastics are also used in medical equipment and computers.
Reliable
Fossil fuels have been relied upon since the industrial revolution. Other renewable energy sources such as solar and wind rely on the current climatic conditions to produce electricity. If the sun is not shining, production of electricity stops. Also, the velocity of wind affects production of electricity. Fossil fuels guarantee reliable supply of electricity.
High calorific value
Calorific value is the amount of energy contained in any fuel. Calorific value is ascertained by measuring the amount of heat produced by the total combustion of a given quantity of it. Calorific value is typically expressed in joules per kilogram. All energy produced on earth has a particular calorific value. The higher the value, the more effective the fuel is. Fossil fuels have the highest calorific value of any fuel. This explains why they are still dominant to renewable and other alternative energy sources.
Abundant
The fact that fossil fuels are able to satisfy the needs of the world population means they are bountiful in supply. Fossil fuels are found in almost every country in the world. This aspect gives governments a piece of mind knowing that they will not deplete in the near future. With technology traveling at breakneck speeds, extraction and refinery procedures have also scaled up, making the availability of fossil fuels even greater.
Creates jobs
There is no doubt that fossil fuels have created numerous jobs in the fields of finance, administration, and construction. According to a report by the U.S. Department of Energy, traditional energy sector employs about 6.4 million Americans today. This demonstrates that fossil fuel energy sector is a solid source of employment.
Easy Set Up
Since they are widely available, the construction of fossil fuel power plant can take anywhere in the world as long as they get large quantities of fossil fuels to feed them. They are easier to extract and process and are capable to produce large amount of energy at a single location.
Disadvantages of Fossil Fuels
Non-renewable
Nonrenewable energy sources are destined to deplete in the near future. Fossil fuels do not qualify as renewable energy resources because their supply is limited. In fact, they are projected to run out in the next 50 years. Also, formation of fossil fuels takes years, which means when they deplete, we may have to wait for another 60 years or so for new ones to form.
Environmental Hazards
Environmental pollution is one of the major disadvantage of fossil fuels. It is a known fact that carbon dioxide, gas released when fossil fuels are burnt, is one of the primary gas responsible for global warming. Rise in temperature of earth has resulted in melting of polar ice caps, flooding of low lying areas and rise in sea levels. If such conditions continue, our planet Earth might face some serious consequences in near future.
Accidents can be disastrous
Unlike renewable energy resources like solar and wind, accidents involving fossil fuels are highly dangerous and can cause massive damage. Oil spills have occurred in the past, especially in the United States. Oil spills lead to pollution of water bodies and death of aquatic animals including those living offshore. Also, the environment around the shore is severely devastated.
Effect on Human Health
Emissions of greenhouse gasses and other toxic elements as a result of fossil fuel combustion can cause serious health complications. Fossil fuels are not at all environment friendly. Burning of fossil fuels result in pollution and can cause serious environmental concerns. Pollution-related diseases kill millions of children a year. According to WHO, 7 million premature deaths annually linked to air pollution. High levels of air pollution can adversely affect your lungs( low lung functioning), trigger asthma, chronic bronchitis and cardiovascular diseases. People who live in areas with a large amount of traffic are at high risk.
Price fluctuations
Fossil fuels are highly susceptible to price fluctuations and market manipulation. This aspect is greatly felt by developing countries that heavily rely on importation of fossil fuels. According to the U.S. Department of Energy, massive price fluctuations and price manipulations by oil producing countries in the middle east cost the economy about 1.9 trillion between 2004 and 2008 alone. Advances in renewable energy technologies have minimized these price fluctuations and manipulations to a greater degree.
Overdependence
According to the U.S. Department of Energy, more than half of the oil consumed in the United States is imported. This overdependence on foreign oil is a security threat to the United States. Nations can use this over reliance as a political leverage, putting the country’s interests in grave danger.
Need Huge Amount of Reserves
Power stations are where power comes from – coal is burned and energy is generated. However, for these power stations to keep working, they require huge amounts of coal to be brought in every single day. Truckloads of fuel, trainloads of fuel need to be shipped into power stations very regularly in order to keep up the level of energy that is required by all those houses, hospitals and shops relying on the power from these fossil fueled power stations.
This means that either power stations need to be built very close to large deposits of coal, or that the coal needs to be shipped miles away to the nearest power station, which requires more power and ends up damaging the Earth even more. These methods of generating electricity can, therefore, be incredibly expensive, and the prices are due to keep on rising as the fuel shortage worsens.This is needed as many countries are still dependent on coal as a major source for producing power.
Finite Energy Source
Fossil fuels are a finite energy resource. Unlike sunlight, water or wind energy, fossil fuels cannot be renewed: the amount of fossil fuels in the earth’s crust today are all that we are ever going to get (at least until another several hundred million years pass and even more organic matter decays and decomposes). This means that, once the gas, coal and petroleum reserves have been completely used up, there is nothing more left.
Unfortunately this also means that we will not be able to use our cars any more as we have not yet found a suitable method to run cars that works as efficiently as petroleum or that is not dangerous.
Impact on Aquatic Life by Oil Spill
Once again, fossil fuels can damage the environment, this time in the form of oil spills. Fossil fuels are needed in huge reserves wherever their plants are set up. This requires them to be transported to the desired location via truck, train, ship or airplane. Often we hear of some leaks in oil tankers or ship getting drowned deep under the sea that were carrying crude oil to get refined. The impact of this is that crude oil contains some toxic substances which when mixed up with water poses serious this impact is disastrous not only for the sea and land but for the animals that live off of it. Birds can get coated in the oil and be unable to fly, fish can choke and other animals, such as seals or penguins, can ingest this deadly fuel when they try to clean it off themselves. Oil spills do not occur often, but when they do they can kill hundreds if not thousands of animals. Transportation of crude oil via sea can cause oil spill which can pose hazard to the aquatic life by lessening the oxygen content of water.
Technologies to get more out of the earth are progressing, but they don’t seem to be doing it as quickly as our demand is growing. In addition, while coal is much more abundant than oil, extraction of coal can be very unsafe, and is damaging to the environment on a large scale, causing erosion, acidification of the environment, and destruction of wild lands. Though the fossil fuels meet our energy and fuel needs, still it’s a high time to look forward for the alternative renewable sources of energy such as wind turbines, solar panels, tidal generators and compost. As said by a great man, there is enough for everyone’s need but not enough for everyone’s greed.
Rising Cost: Few middle-east countries in this world hold surplus amount of fossil fuels and are responsible for 40 percent of the world’s oil production. The rest of the world depend on these countries to fulfill the gap between demand and supply in their own countries. Lower output, fear of war, strikes by trade unions can result in worldwide price fluctuations.
Health of Coal-mining Workers: Foraging for coal in coal mines, for instance, can be very dangerous, since the dust that coats people who go down to get coal can get ingested and seriously compromise someone’s health. Mining for coal as well as drilling for oil can cost as many as hundreds of peoples’ lives every single year. We may need to find an energy source that is safer in the future.
Fossil fuels have a number of different pros and cons. Unfortunately, the biggest disadvantage to burning fossil fuels for energy is the fact that it is so damaging to the environment. However, luckily more and more effort is being put into finding alternative sources of energy such as renewable sources like sunlight and wind, which means that we should soon not have to rely on fossil fuels any longer.
30 Practical Ways To Cut Fuel And Energy Use And Allow The Natural Environment To Grow Again
1.Do not idle – Long idling without turning off the car’s engine leads to the unnecessary and prolonged burning of fuel.
Air Pollution
https://www.youtube.com/watch?v=vYSAPwQwMTk
Clear air for children report: “Reducing fossil fuel emissions matters for children’s health”
https://www.youtube.com/watch?v=3l7AmnIljTg
How Burning Fossil Fuels Leads to Climate Change
https://www.youtube.com/watch?v=gBLQUplzZZo
https://www.youtube.com/watch?v=BJWq1FeGpCw
What If We Stopped Burning Fossil Fuels RIght Now?
https://www.youtube.com/watch?v=v2aShVTMMNc
Fossil Fuel Usage: And the Effects of It
https://www.youtube.com/watch?v=FqmtLmmuQhw
Greenhouse Effect
https://www.youtube.com/watch?v=x_sJzVe9P_8
The wind blows because of differences in air pressure from one location to another. Wind blows from areas of high pressure toward areas of low pressure. If the high pressure area is very close to the low pressure area, or if the pressure difference is very great, the wind can blow very fast.
What is Air Pressure?
Imagine a group of acrobats at the circus. One climbs up and stands on another’s shoulders. The weight of the acrobat on top puts more pressure on the one below. Then another acrobat climbs up and stands on the second acrobat’s shoulders. Now there’s even more pressure on the acrobat on the bottom because he is under the weight of the two acrobats above him. It’s the same with air. Yes, air has weight, and probably more than you think. In fact, the weight of the air on your desk at school weighs about 11,000 pounds. That’s about the same weight as a school bus! Since air pressure pushes in all directions, the air pressure pushing up from under your desk balances out the air pushing down on it, so the desk doesn’t collapse under the weight. Just like an acrobat with two people stacked on his shoulders would want to move to where there wasn’t so much pressure on him, air moves from areas where the pressure is higher to where it is lower.
What causes Air Pressure?
Air pressure depends on the density of the air, or how close together its molecules are. You know that a hard rubber ball is more dense than a Styrofoam ball and that ice cream is more dense than whipped cream. Air lower in the atmosphere is more dense than air above, so air pressure down low is greater than air pressure higher up. (Remember those acrobats; there’s a lot more pressure on the one on bottom than on the one on top.) Temperature also makes changes in air pressure. In cold air, the molecules are more closely packed together than in warm air, so cold air is more dense than warm air.
Rising and Sinking Air
Since warm air is less dense and creates less air pressure, it will rise; cold air is denser and creates greater air pressure, and so it will sink. When warm air rises, cooler air will often move in to replace it, so wind often moves from areas where it’s colder to areas where it’s warmer. The greater the difference between the high and low pressure or the shorter the distance between the high and low pressure areas, the faster the wind will blow. Wind also blows faster if there’s nothing in its way, so winds are usually stronger over oceans or flat ground. Meteorologists can forecast the speed and direction of wind by measuring air pressure with a barometer.
What Is Wind?
Air may not seem like anything at all; in fact, we look right through it all the time, but during a windstorm, air really makes its presence known. Wind is able to lift roofs off buildings, blow down power lines and trees, and cause highway accidents as gusts push around cars and trucks.
Wind is moving air and is caused by differences in air pressure within our atmosphere. Air under high pressure moves toward areas of low pressure. The greater the difference in pressure, the faster the air flows.
Wind Direction
Although wind blows from areas of high pressure to areas of low pressure, it doesn’t blow in a straight line. That’s because the earth is rotating. In the northern hemisphere, the spin of the earth causes winds to curve to the right (to the left in the southern hemisphere). This is called the coriolis effect. So in the northern hemisphere, winds blow clockwise around an area of high pressure and counter-clockwise around low pressure.
BASIC PRINCIPLES OF WIND ENERGY CONVERSION
The circulation of air in the atmosphere is caused by the non-uniform heating of the earth’s surface by the sun. The air immediately above a warm area expands, it is forced upward by cool, denser air which flows in from surrounding areas causing wind.
The nature of the terrain, the degree of cloud and the angle of the sun in the sky are all factors which influences this process.
In general, during the day the air above the land mass tends to heat up more rapidly than the air over water. In coastal regions this manifests itself in a strong onshore wind. At night the process is reversed because the air cools down more rapidly over the land and the breeze therefore blows off shore.
Despite the wind’s intermittent nature, wind patterns at any particular site remain remarkably constant year by year. Average wind speeds are greater in hilly and costal area than they are well inland. The winds also tend to blow more consistently and with greater strength over the surface of the water where there is a less surface drag.
Wind possesses energy by virtue of its motion. Any device capable of slowing down the mass of moving air, like a sail or propeller, can extract part of the energy and convert is into useful work.
There are three factors determine the output power generated from the windmill, they are
(1) The wind speed
(2) The cross section of wind swept by rotor, and
(3) The overall conversion efficiency of rotor, transmission system and generator or pump.
No device, however well-designed, can extract all of the wind’s energy because the wind would have to be brought to a halt and this would prevent the passage of more air through the rotor. The most that is possible is for the rotor to decelerate to whole horizontal column of intercepted air to about one-third of its free velocity.
A 100% efficient aerogenerator would therefore only be able to convert up to a maximum of around 60% of the available energy in wind into mechanical energy.
A well-designed blades will typically extract 70% of the theoretical maximum, but losses incurred in the gear box, transmission system and generator or pump could decrease overall wind tubine efficiency to 35% or less.
Windmill – Pumping water
One of the classical applications of wind energy is water pumping. Water pumping windmill pumps water from bore well, ponds etc. used for drinking and domestic purpose. Vertical axis wind mills are more suited in urban areas due to their low noise level.
Wind energy is used to rotate the wind blades. This blade coupled to the shaft. At the end of shaft the flywheel is placed. The eccentric arrangement is provided in the flywheel. When the blade rotates automatically fly wheel also rotates. Due to the eccentric arrangement the rotation motion of the flywheel is converted into linear motion. This reciprocating motion is given to the handle of the pumping system. The up down motion of the handle is given to the piston, where the water is sucked using pressure variation from lower ground. Finally the water is supplied to the outlet. Wind blade provides the continuous motion which helps to supply the water continuously. Since time immemorial, the main source of energy has been coal, oil, natural gas, nuclear energy, wood and coal. However, all these sources are limited and are the main cause of pollution and this has led to development and more focus on sustainable energy supply with minimum pollution effects. Hence research and analysis has shown that wind energy, solar energy and biomass are the most prominent solutions to the above problems because they are eco -friendly and readily available in nature.
A wind mill is a rotary device that extracts energy from the wind. The windmill converts kinetic energy from the wind, also called wind energy, into mechanical energy. If the mechanical energy is used to pump the water, the device may be called water pumping windmill
A two bladed Savonius rotor is used in wind mills. It has wide significance due to its ability to capture wind energy from any direction & it can operate at low wind speed also. It also called S-rotor
The concept of Savonius rotor is based on the principle of Flatter rotor, which is formed by cutting a cylinder into two halves along the central axis and then bending it into the two semi- cylindrical surfaces sideways along the cutting axis to resemble the letter `S`.Although Savonius rotor has less efficiency in the range of 15% to 21%, it is widely used due to its advantages including Self-starting, Omni-directional, less noisy & most important suitable for pumping water, grinding grains, sailing etc.
Water pumping is done by Centrifugal pump. The centrifugal pump is generally the most economical followed by rotary and reciprocating pumps. Although, positive displacement pumps are generally more efficient than centrifugal pumps, the benefit of higher efficiency tends to be offset by increased maintenance costs.
Water supply in mara region today
The largest water source in the mara region is Lake Victoria and its influents Mara River and Grumeti River. Because of the lack of water supply pipes, many farmers have to fetch water outside their homes, such as at a communal well or at a neighbouring farm. This is a heavy, time-consuming work, most often carried out by women and children. The water is then being used for cooking, hygiene and farming. Irrigation systems are not common; most farmers irrigate by hand.
Mr. Moris is one of few farmers in the region who has a windmill. his windmill is placed at the shoreline of Lake Victoria and drives a piston pump which pumps water to his farm 600meters away. The inlet is 30meters out in the lake. The total head is about 6 meters. Mr Moris has had his windmill for 6years. He uses a plain bearing made of wood for the axis and it works very well.His family is supplied with all water needed for domestic use
The water pumping windmill is a simple, efficient design.
Working:
A water pumping windmill is simple, and efficient. The blades of the windmill wheel catch the wind, which turns the rotor. This motion drives a pump rod, up and down inside of a pipe in the well. A cylinder with a sealed plunger going up and down inside forces the water up the pipe.
windmill construction (figure 12) consists of a wooden frame, a steel axis with six steel bar wings stabilised by strings, two bicycle wheels used as bearings, and a bar and connecting rod (conrod) used for power transference. The sails should be made of a fabric that does not let too much wind through, or absorb too much water. The sails are then tied to the wings with strings. There are different ways to anchor the frame in the ground. It can be dug down in the sand and hold in place with heavy stones, or tied to nearby trees or stumps
The bar is fastened on one of the bicycle wheels, so when the wheel rotates, the conrod is driven up and down in a pumping motion (figure 13). A pump can be attached to lower end of the conrod, and thus the pump will be driven by the windmill when the wind blows. It will pump one stroke per rotation of the windmill. Tests with the prototype windmill were performed only with a semi-rotary pump. According to the manual, it is also possible to use a piston pump. The sails for the prototype were made of real sail fabric, sponsored by a sail manufacturer. The prototype resembles a Cretan windmill, with cloth instead of metal blades covering a large part of the swept area
USES:
A water-pumping windmill pumps water from wells, ponds, and bore wells for drinking, minor irrigation, salt farming, fish farming, etc. Available windmills are of two types, namely direct drive and gear type. The most commonly used windmill has a horizontal axis rotor
What is a wind pump used for?
The vast majority of wind turbines built in the past have been used for non-electrical applications, and historically, wind water pumps were purely mechanical devices siting high up on top of a wooden tower pumping water for watering livestock, land drainage and irrigation, and as wind turbines do not consume water, it …
Farmers are used for Crop Irrigation. Windmills can be used to lift water from the aquifer to directly irrigate crops or to pipe water from one location, such as a reservoir or pond, to a location where water is required. This is direct wind-to-water power, a mechanical means of moving water. They also share water with their neighbors.”
What are those windmills on farms?
A windmill is a structure that converts the energy of wind into rotational energy by means of vanes called sails or blades. Centuries ago, windmills usually were used to mill grain (gristmills), pump water (windpumps), or both. There are windmills that convert the rotational energy directly into heat.
Water for Livestock
The wind blows, the windmill cranks the pump and water comes up from close-to-the-surface aquifers and fills usually small metal reservoirs set below ground level. A flotation device signals when the reservoir is filled, and the windmill disengages from the water pump. The windmill stops spinning. When the water level falls below a determined level, a lever drops, and the windmill is loosed; when wind is present, the process begins again.
Crop Irrigation
Windmills can be used to lift water from the aquifer to directly irrigate crops or to pipe water from one location, such as a reservoir or pond, to a location where water is required. This is direct wind-to-water power, a mechanical means of moving water. As technology advances, more farmers are installing modern windmills that convert wind into electrical power; the electricity can then be used to irrigate crops. This is already happening in Afghanistan, as reported by the Department of Defense: “Farmers can use the windmills to power irrigation systems for crops, such as soybeans and wheat, while avoiding operating costs and maintenance problems of diesel-powered mechanical generators. They also share water with their neighbors.”
Pond Aeration
Farmers often have a storage reservoir or pond where water is gathered first and later distributed to all parts of the farm as water is required. But water, sitting still, can stagnate and cause problems around a farm or ranch. Windmills can be employed to move the water by forcing air below the surface, thus keeping the water fresher longer. Windmills can produce water and also aerate water.
Greenhouse Irrigation
Traditionally, windmills have been used to inexpensively irrigate greenhouse operations. Due to the rising cost of energy, greenhouse farmers are looking to both the wind and the sun to provide more than water, more than chlorophyll. With the advance in clean-energy technology, windmills, in conjunction with solar power, are becoming the best way to irrigate and provide power for greenhouses, including artificial lighting at night when required. As reported in the Kuna Melba News, a farm couple in Idaho is already applying this technology: “The turbine first went on line in May and after encountering a few problems it became fully operational on June 16, 2006 and is providing all necessary power for the greenhouse.”
Modern Farming and Energy
As farming is modernized, renewable energy, cleaner energy and more fuel-efficient energy will become more significant considerations. Wind-generated energy, combined with photovoltaic energy, will be used to power farms, to plow and harvest, and to irrigate, aerate, and water livestock. Currently, the “fuel-to-food” conversion rate is cycling out of control, and increasingly farmers are resourcefully turning to the powers inherent in the wind to more economically produce food for the world.
Windmill – Transportation
Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity to power homes, businesses, schools, and the like.
Can a car run on wind energy?
Running a Car on Wind Energy. A new power packed performance super car has been designed in California that can run at the speed of 155 mph without conventional fuel. … These air intakes will channel the airflow over the car’s body towards the turbine
Air pollution is a major concern of new civilized world, which has a serious toxicological impact on human health and the environment. It has a number of different emission sources, but motor vehicles and industrial processes contribute the major part of air pollution. According to the World Health Organization, six major air pollutants include particle pollution, ground-level ozone, carbon monoxide, sulfur oxides, nitrogen oxides, and lead. Long and short term exposure to air suspended toxicants has a different toxicological impact on human including respiratory and cardiovascular diseases, neuropsychiatric complications, the eyes irritation, skin diseases, and long-term chronic diseases such as cancer. Several reports have revealed the direct association between exposure to the poor air quality and increasing rate of morbidity and mortality mostly due to cardiovascular and respiratory diseases. Air pollution is considered as the major environmental risk factor in the incidence and progression of some diseases such as asthma, lung cancer, ventricular hypertrophy, Alzheimer’s and Parkinson’s diseases, psychological complications, autism, retinopathy, fetal growth, and low birth weight. In this review article, we aimed to discuss toxicology of major air pollutants, sources of emission, and their impact on human health
Air pollution is defined as all destructive effects of any sources which contribute to the pollution of the atmosphere and/or deterioration of the ecosystem. Air pollution is caused by both human interventions and/or natural phenomena. It is made up of many kinds of pollutants including materials in solid, liquid, and gas phases. Air pollutions of indoors will not be specifically considered in this article.
TOXICOLOGY OF AIR POLLUTION
Effects of air pollutants on living organism will not only be limited to the human and animal health but also include the whole environment. Different geographical conditions, global climate changes, and the environmental variations aect the human health and the environment including the animal life.
Environmental damages
Ecologically, air pollution can cause serious environmental damages to the groundwater, soil, and air. It is
also a serious threat to the diversity of life. Studies on the relationship between air pollution and reducing
species diversity clearly show the detrimental effects of environmental contaminants on the extinction of animals and plants species. Air suspended toxicants may also cause reproductive effects in animals.Acid rain, temperature inversion, and global climate changes due to the emissions of greenhouse gasses to the atmosphere are other major ecological impacts of air pollution.
Air Pollution the calculation is simple
An estimated 7 million people per year die from air pollution-related diseases. These include stroke and heart disease, respiratory illness and cancers.
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Many health-harmful air pollutants also damage the climate. Fine particles of black carbon (soot) from diesel and biomass combustion and ground level ozone are leading examples.
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Reducing air pollution would save lives and help slow the pace of near-term climate change.
WHERE DOES AIR POLLUTION COME FROM?
The service reports daily outdoor levels of pollution, mostly fromoutdoor sources. Different sources are responsible for different pollutants. Road transport is the main source of nitrogen dioxide and carbon monoxide. Power Stations and other industrial sources also produce nitrogen dioxide. Industry is the mainsource of sulphur dioxide. Particles he ground. The pollutants that cause ground level ozone come from a range of sources, including petrol and other fuels. Ground Level ozone is different to the come from many sources,including road transport, power stations and other industry. The burning of wood or coal for home heating can also be an important source of sulphur dioxide and particles. Ground level ozone is not emitted directly from any source.Instead it is formed when sunlight acts on nitrogen dioxide and other atmospheric substances close to ozone layer, which is affected by ozone depleting substances, such as CFCs, that have been released into the atmosphere
Urban Air Pollution : Urgent action to tackle air pollution in cities is needed to improve the health and well-being of over half of the world’s population. Only 12% of cities globally meet WHO air quality guidelines, with some cities suffering from pollution levels 2-5 times higher than guideline thresholds. The good news is that urban planning, urban transport, building design and waste methane gas capture can reduce urban emissions from traffic, building energy, power systems and municipal sewage/waste. Strategic changes in urban development priorities may be the most effective means of reducing reduce air and climate pollutants while optimizing health benefits. Cities are suffering from soaring rates of noncommunicable diseases. This is due not only to air pollution, but also to physical inactivity, poor diets, unsafe housing and other urban health inequities. Urban policies that target climate and air pollution emissions, as well as other causes of ill health, can yield multiple benefits. For instance, investing in clean urban transit, pedestrian and bike networks can help reduce traffic injury and support physical activity – as well as reducing SCLPs, air pollution and CO2 emissions. More physical activity, in turn, helps reduce obesity and obesity related-diseases.
Step up collaborations with the health sector, which can evaluate urban policy options and priorities in light of local health needs, inform patient populations about air pollution’s health risks as well as actions that reduce their exposures. The UHI will also collaborate with CCAC initiatives on diesel vehicle emissions, household cooking/heating, and municipal waste management, among others.
Minimize air pollution from cars
Road transportation is one of the biggest emitters of nitrogen oxides. Oxides of nitrogen are closely monitored air pollutants with an adverse effect on the healthy lung development and the overall lifetime expectancy.
The problem of harmful emissions from cars can be felt especially in cities with heavy traffic. Personal diesel cars and smaller vans top the list of the dirtiest polluters in such instances.
As a driver you can help reduce the pollution from your car by sticking to a few of simple rules.
Remember:
By following this advice you will definitely help reducing air pollution caused by cars, but you should still be aware that any car with an exhaust pipe will emit some amounts of nitrogen oxides, particulate matter, carbon monoxide and carbon dioxide into the air. Therefore, the most effective strategy to keep the air clean is to avoid driving your car when possible.
Walk, bike or use public transportation to reduce air pollution
When you have the option, take public transportation to get to work. Many cities have already invested in a good public transportation network and by choosing public transportation (even just one or two days a week) you are helping to reduce the number of cars on the road.
Many municipalities also offer great benefits to encourage people to use their public transportation. Some commonly applied advantages are cheap long-term fares, shorter times to reach your destination, short waiting times, punctuality, and fares for free at certain hours, weekends or for seniors and students.
Save energy and make sure you use energy efficiently
In 2016, the International Energy Agency released a report with the key statement that “air pollution is an energy problem.”
Similar concept repeats in other scientific papers. For example, the International Journal of Environmental Research and Public Health published a study that lists a myriad of health problems arising from the air contamination due to the combustion of fossil fuels.
Burning of fossil fuels for energy production releases potent pollutants such as:
All of these substances are known to have negative impacts on human health and the environment.
That is why being mindful about your energy consumption matters. Decreasing your energy need will not only save you money on utility bills but more importantly will benefit your health in the long-term.
When you save energy, whether it is at home, at work, or while you are traveling, you are reducing production of many polluting substances as well as carbon emissions that make the air dirty and cause global warming.
Some effective strategies to lower your energy consumption to set you on the right track are:
Take a good care of your wood stove or fireplace
If you own a wood burning stove or a fireplace, be sure to keep it well-maintained. When burning fire-wood in wood stoves, incomplete combustion often releases particulate matter of a very small size (less than 2.5 micrometer). These tiny particles are the most harmful to our respiratory tracts because they can easily get deep into our lungs, and for their small size may even enter our bloodstream.
Other noxious gases released from fireplaces and wood stoves are:
What amount of emissions your stove produces depends on:
Newer models are usually more efficient than older, improperly maintained models. Old wood stoves from 80s release three to six times more particulate air pollutants than newer stoves [5]. This is due to lower burning temperature and insufficient aeration.
You should also preferably have the stove (fireplace) installed by a professional with a necessary certification. This ensures that your stove will perform with the best efficiency and at the lowest risk of unwanted accidents.
Dry firewood burns better than humid wood. It will thus emit less air pollutants. Also make sure you don’t burn wood with paint, glue or other coating because it could release additional toxins into the air.
Pellets made of compacted sawdust and wood waste are a less polluting and more heat-producing alternative to wood.
Recycle and buy recycled products
Imagine all complex processes needed to create new items from scratch. You need to begin with mining for raw materials. Mined materials then need to be transported, cleaned from impurities, processed and treated until they can finally be transformed into desired products.
Each stage of the manufacture from raw materials is accompanied by emissions of polluting particles, heavy metals, chemicals and greenhouse gases.
It also takes more energy to make new items from raw materials, increasing the environmental footprint (including the air pollution that is produced) of those products, compared with those products that are made from recycled materials.
Since recycled products have already been extracted and processed once, manufacturing the same products the second time is much less-energy intensive and polluting.
Consume less and choose sustainable products
A 2017 study published in the International Journal of Science highlighted that 22 percent of premature deaths caused by air pollution happened in countries that produce (cheap) goods for export to developed countries [6].
European and North American love of cheaper gadgets from China actually killed more than 100,000 people in Chinese towns where factories manufacturing many of our favorite products are located [6].
Higher levels of environmental pollution in these regions are often due to weak or lacking emission restrictions in place (which is also why these goods can be produced at a lower cost), but the air they are polluting is still part of the same air you are and will be breathing for as long as you are on this planet.
So, our consumption patterns affect pollution levels globally. Even if you haven’t ever traveled to China, your choice of products in your local supermarket will decide whether you encourage polluting businesses abroad.
Consuming less and thinking twice before buying new item is the best you can do for the environment and the air quality. If you need to buy new products, whatever they are, support local companies that are committed to sustainable manufacturing practices and reducing pollution in the air.
Eat local and organic produce & eat less meat
In countries with intensively farmed lands, agriculture is the main emitter of ammonia and other nitrogen-containing compounds like nitrous oxide or nitric oxide. Livestock farming also emits high concentrations of methane, a potent greenhouse gas, and non-methane volatile organic compounds.
Agricultural pesticides and fertilizers release Persistent Organic Pollutants, such as hexachlorobenzene, hexachlorocyclohexane and pentachlorophenol in the air [7]. Those names don’t sound that good, do they? Now, consider that the air you breathe may contains also these compounds with their complex names. There is nothing natural about that…
A study by the Earth Institute of Columbia University warns over health-damaging effects of gases emitted from conventional agriculture in combination with industrial emissions. The research says that when these pollutants combine together, they form fine particles that easily damage our respiratory system, leading to chronic health problems [8].
Organic agriculture is not entirely emission-free as well, but the amounts of many pollutants are lower.
This is due to a number of reasons:
If possible, consider buying organically-grown produce over the conventional one, and look for local products because this way you cut down emissions from transportation and energy needed to get the food on your plate.
A very important step to take in regard to your consumption pattern is to eat less meat. You may have heard already about the significant greenhouse gas footprint of the modern livestock industry. By going meatless some days a week or eating maximum 90 grams of meat a day, you will lower air pollution and will even benefit your health
Grow your own food and eat seasonal products
It is easy to get produce from all over the world these days. Just a quick trip to supermarket opens up a world of a great variety of exotic fruits, vegetables and spices. Although, having such a great diversity is wonderful, it always comes with a cost – in this case the cost of polluting the air we breathe by long-distance transportation.
Just think about it. Bananas imported from Costa Rica, Guatemala, Honduras or other exotic destinations. Kiwis from Italy, Chile, New Zealand… Mangoes brought from Thailand, Philippines, India or Pakistan. These favorite fruits have to travel really long distances to make it to your supermarket.
One easy and fun way to make sure you have a nutrient-rich diet, which even helps offset some of the harmful emissions of the food industry, is to grow your own food. This way you will have direct access to fresh produce of your preference, and you will even be sure that what you eat is chemical-free.
If that sounds interesting, check our article: 10 Things to Know Before Starting Your Own Garden
If you are unable to grow fruits and vegetables due to time and/or space limitations, stick to the rule of eating mostly seasonal products that are native to your area. The reason for this is very simple – when in season, products will be more likely sourced from regional farmers.
Plant trees
Trees around your house and in your neighborhood help reduce air pollutants significantly. Researchers from the University of Southampton measured the ability of trees in London to remove particulate pollutants from the air. Their findings were truly astonishing. Trees remove between 850 to 2,000 tons of harmful particles from the urban air each year [9].
Except of removing the particulate matter, trees also decrease levels of nitrogen dioxide, sulphur dioxide, carbon dioxide and monoxide, ozone, benzene and dioxin.
Some of the most efficient tree “air cleaners” are large-growing species with leaves. For example, common ash, ginkgo biloba, oak, various linden trees and elms [10].
Trees planted alongside roads or on the boundaries of your property also slow down polluted air from being carried far by wind. You can think of it as a protective shield formed by tree canopy. This way trees prevent spreading of air pollution over large distances. Then, they gradually filter the pollution at the spot without giving it much chances of contaminating neighboring areas.
But trees are not only natural air filters, they also cool down summer temperatures by a few degrees. Even the slightest temperature reduction can make a real difference in keeping the air clean, because many compounds and ground-level-ozone-forming chemicals are temperature dependent [11]. This means that they transform into pollutants only when outdoor temperature reaches certain level.
Additionally, cooler temperatures are more comfortable for our wellbeing, which makes trees a great substitute for energy demanding air conditioners.
Raise awareness and become interested in local matters
Awareness-raising can be the first step to increase the knowledge of people around you and start the change in their attitudes towards mitigating the problem of poor air quality in affected areas.
As you can see most of these ways on dealing with air pollution are rooted in the consumer behavior. Often, all it takes is just being a little bit more aware of the impact of your personal decisions as a consumer on the air quality–even so far from you as on a different continent.
By making conscious consumer choices, your initiative can serve as a good example to your friends, family and community. This way you can become one of the initiators of a bigger change in your area.
Equally important is to express your support to public policies and representative politicians who work to protect the air and the environment. If you care about the quality of life in the place you call home, it is necessary to stay informed and take supportive actions for good causes.
Reduce Indoor Air Pollution
The majority of people perceive air pollution to be something only experienced outdoors. However, it has been established that much of the toxic and air polluting substances found outdoors are equally indoors. Be it in the car, at home or the workplace, the air polluting substances are present and can seriously impacts people’s health if the air quality is not kept as clean as recommended.
Aerosol sprays, dusty furniture, scented candles, pet shedding, dust mites and air fresheners are a few examples of indoor air pollutant sources. The good news is that indoor air pollution is easily manageable provided the indoor environment is kept clean and free of the polluting substances.
Easy and Effective Ways to Reduce Indoor Air Pollution
Acid rain refers to a mixture of deposited material, both wet and dry, coming from the atmosphere containing more than normal amounts of nitric and sulfuric acids. Simply put, it means rain that is acidic in nature due to the presence of certain pollutants in the air due to cars and industrial processes. It is easily defined as rain, fog, sleet or snow that has been made acidic by pollutants in the air as a result of fossil fuel and industrial combustions that mostly emits Nitrogen Oxides (NOx) and Sulfur Dioxide (SO2). Acidity is determined on the basis of the pH level of the water droplets. Normal rainwater is slightly acidic with a pH range of 5.3-6.0, because carbon dioxide and water present in the air react together to form carbonic acid, which is a weak acid. When the pH level of rain water falls below this range, it becomes acid rain.
When these gases react with water molecules and oxygen among other chemicals found in the atmosphere, mild acidic chemical compounds such as sulfuric and nitric acid are formed resulting to acid rain. Acid rain generally leads to weathering of buildings, corrosion of metals, and peeling of paints on surfaces. Erupting volcanoes contains some chemicals that can cause acid rain. Apart from this, burning of fossil fuels, running of factories and automobiles due to human activities are few other reasons behind this activity.
Presently, large amounts of acid deposition is witnessed in the southeastern Canada, northeastern United States and most of Europe, including portions of Sweden, Norway, and Germany. In addition, some amount of acid deposition is found in parts of South Asia, South Africa, Sri Lanka, and Southern India.
Forms of Acid Rain
There are two forms in which acid deposition occurs – wet and dry. Both are discussed below:
It was discovered way back in 1800s during the Industrial Revolution. A Scottish chemist, Robert Angus Smith, was first to discover this phenomenon in 1852 as a relationship between acid rain and atmospheric pollution in Manchester, England. But it gained public attention mainly in 1960s. The term was coined in 1972 when the NY Times published reports about the climate change effects which started arising due to the occurrence of acid rain in the Hubbard Brook Experimental Forest in New Hampshire.
Effects of Acid Rain
Acid rain has significant effects on the world environment and public health.
Solutions to Acid Rain
Cleaning up Exhaust Pipes and Smokestacks
Most of the electric power supporting the modern-day energy requirements comes from combusting fossil fuels such as oil, natural gas, and coal that generate nitrogen oxides (NOx) and sulfur dioxide (SO2) as the chief contributors to acid rain. Burning coal largely accounts for SO2 emissions while NOx emissions are mostly from fossil fuel combustions.
Washing coal, use of coal comprised of low sulfur, and use of devices known as “scrubbers” can provide technical solution to SO2 emissions. “Scrubbing” also called flue-gas desulfurization (FGD) typically work to chemically eliminate SO2 from the gases leaving smokestacks. It can eliminate up to 95% of SO2 gases. Power generation facilities can also shift to using fuels that emit much less SO2 such as natural gas instead of burning coal. These methods are simply called emission reduction strategies.
Similarly, NOx emissions from automobile fossil fuel combustions are mitigated upon by use of catalytic converters. Catalytic converters are fixed on the exhaust pipe system to reduce NOx emission. Improvement of gasoline that combusts cleaner is also a strategy for reducing emission of NOx gases.
Restoring Damaged Environments
Use of limestone or lime, a process called liming, is a practice that people can do to repair the damage caused by acid rain to lakes, rivers and brooks. Adding lime into acidic surface waters balances the acidity. It’s a process that has extensively been used, for instance in Sweden, to keep the water pH at optimum. Even though, liming is an expensive method and has to be done repeatedly. Furthermore, it only offers a short-term solution at the expense of solving the broader challenges of SO2 and NOx emissions and risks to human health. Nevertheless, it helps to restore and allow the survival of aquatic life forms by improving chronically acidified surface waters.
Alternative Energy Sources
Besides fossil fuels, there is a wide range of alternative energy sources that can generate electrical power. These include wind energy, geothermal energy, solar energy, hydropower, and nuclear power. Harnessing these energy sources can offer effective electrical power alternatives instead of using fossil fuels. Fuel cells, natural gas, and batteries can also substitute use of fossil fuel as cleaner energy sources. As of today, all energy sources have environmental and economic costs as well as benefits. The only solution is using sustainable energy that can protect the future.
Individual, National/State, and International Actions
Millions of people directly and indirectly contribute to SO2 and NOx emissions. Mitigation of this challenge requires individuals to be more informed about energy conservation and ways of reducing emissions such as: turning off lights or electrical appliances when not using them; use public transport; use energy efficient electrical appliances; and use of hybrid vehicles or those with low NOx emissions.
Some More Information:-
ACID RAIN,CAUSES,EFFECTS AND CONTROL STRATEGES- Teachers Guides
https://www.epa.gov/sites/production/files/2017-03/documents/teachersguide.pdf
The Windmill Farmer
https://www.youtube.com/watch?v=0nd9OuX7Bd4
Renewable Energy | National Geographic
https://www.youtube.com/watch?v=1kUE0BZtTRc
Renewable Wind Energy
https://www.youtube.com/watch?v=hDRbnUJlWm4
Air pollution- inside children’s body and brain
https://www.youtube.com/watch?v=QcS3ovdsgNI
Acid Rain
https://www.youtube.com/watch?v=m2ryRDgCgCs
https://www.youtube.com/watch?v=EsGdXWxoQsU
https://www.youtube.com/watch?v=Nf8cuvl62Vc
What is Acid Rain? | National Geographic
https://www.youtube.com/watch?v=1PDjVDIrFec
Reducing acid rain or its effects
https://www.youtube.com/watch?v=VILCk2CpUCw
Wind is the horizontal movement of air in response to differences in pressure. Winds are the means by which the atmosphere attempts to balance the uneven distribution of pressure over Earth’s surface. The movements of the wind also play a major role in correcting the imbalances in radiational heating and cooling that occur over Earth’s surface.Our global wind system transports energy poleward to help maintain an energy balance. The global wind system also gives rise to the ocean currents, which are another significant factor in equalizing the energy imbalance. Thus, without winds and their associated ocean currents, the equatorial regions would get hotter and the polar regions colder through time.
Besides serving a vital function in the advectional (horizontal) transport of heat energy, winds also transport water vapor from the air above bodies of water, where it has evaporated, to land surfaces, where it condenses and precipitates. This allows greater precipitation over land surfaces than could otherwise occur. In addition, winds exert influence on the rate of evaporation it-self. Furthermore, as we become more aware of and concerned about the effect that the burning of fossil fuels has on our atmosphere, we look for alternative energy sources. Natural sources such as water, solar energy, and wind become increasingly attractive alternatives to fossil fuels. They are clean, abundant, and renewable.
Global and Local Winds
Wind is the horizontal movement of air. All wind is caused by the uneven heating of Earth’s surface, which sets convection currents in motion. Convection currents on a large scale cause global winds; convection currents on a small scale cause local winds.
Global Winds
Earth’s curved surface causes some parts of Earth to receive the Sun’s rays more directly than other parts. For example, the Sun shines more directly on the surface at the equator than at the poles. As the warmer air over the equator rises, colder air from the poles rushes toward the equator to take its place. This steady exchange of warm and cold air that occurs between the equator and the poles produces global wind belts. Earth’s rotation causes the direction of the winds to bend slightly: toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. Global winds push air masses around Earth and bring changes in the weather. In the United States, global winds called the prevailing westerlies push air masses from west to east.
Local Winds
Small-scale convection currents arise from uneven heating on a smaller scale. This kind of heating occurs along a coast and in the mountains. Small-scale convection currents cause local winds. Local winds blow over a much smaller area and change direction and speed over a shorter period of time than global winds.
Windmill – Generate Electricity
Wind power is becoming more and more common. The new innovations that are allowing wind farms to appear are making them a more common sight. By using large turbines to take available wind as the power to turn, the turbine can then turn a generator to produce electricity. While this seemed like an ideal solution to many, the reality of the wind farms is starting to reveal an unforeseen ecological impact that may not make it an ideal choice.
https://www.youtube.com/watch?v=4kW1y9xZOZM
Working Principle of Wind Mills
A wind turbine is a machine that coverts wind energy into electricity. The generators are connected to battery charging circuits and finally to large utility grids. In windmills the wind passes through the airfoil section of the blades and the lift produced generates a torque which is then transformed to electricity in the generator. It is basically the conversion of the wind energy into the mechanical energy of the turbine and then finally to electricity. As the output of the wind turbine is dependent on the availability of the winds it is intermittent and undependable. They can however be used along with conventional generators in a large grid and can reduce the loads of these generators when they are generating. The other option is to use storage devices like batteries and then discharge the electricity uniformly.
The main parts of the windmills are as follows:
The working principle is that when the wind passes through the blades, the blades experience a lift due to the aerodynamic airfoil shape. Due to the lift produced, the blades move and start rotating. The yaw unit aligns it towards the incoming wind direction when the winds change. The rotation of the blades is transmitted through the gear train and couplings to the generator that generates electricity. The electricity is then transmitted through the wires to the storage batteries or directly to the grid
How Does a Wind Turbine Generate Electricity?
Simply stated, wind turbines work the opposite of a fan. Instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity. The wind turns the blades, which in turn spins a generator to create electricity.
Wind power converts the kinetic energy in wind to generate electricity or mechanical power. This is done by using a large wind turbine usually consisting of propellers; the turbine can be connected to a generator to generate electricity, or the wind used as mechanical power to perform tasks such as pumping water or grinding grain. As the wind passes the turbines it moves the blades, which spins the shaft. There are currently two different kinds of wind turbines in use, the Horizontal Axis Wind Turbines (HAWT) or the Vertical Axis Wind Turbines (VAWT). HAWT are the most common wind turbines, displaying the propeller or ‘fan-style’ blades, and VAWT are usually in an ‘egg-beater’ style.
What is Windmill give its principle of working?
A windmill converts wind energy into rotational energy by means of its blades. The basic principle of every windmill is to convert kinetic energy of wind into mechanical energy which is used to rotate the turbine of electrical generator to produce electricity.
Converting Wind to Mechanical Energy
Wind is converted by the blades of wind turbines. The blades of the wind turbines are designed in two different ways, the drag type and lift type.
Creating Electricity from Wind
To create electricity from wind the shaft of the turbine must be connected to a generator. The generator uses the turning motion of the shaft to rotate a rotor which has oppositely charge magnets and is surrounded by copper wire loops. Electromagnetic induction is created by the rotor spinning around the inside of the core, generating electricity.
Distribution of Electricity
The electricity generated by harnessing the wind’s mechanical energy must go through a transformer in order increase its voltage and make it successfully transfer across long distances. Power stations and fuse boxes receive the current and then transform it to a lower voltage that can be safely used by business and homes.
Wind energy kites
Clean energy is more commercially available than ever, but it still occupies less than 5% of global energy production. The affordability of wind power is limited by existing systems.
Conventional wind power systems are reaching the limits of their technology. To generate more wind power, turbine structures have become taller and heavier. On average, onshore turbines require 100 tonnes of steel, fiberglass, concrete and other materials to produce a single megawatt of capacity.
Makani hopes to enable the shift to clean, renewable energy by building a kite that generates power at a cost lower than any other technology.
This energy kite eliminates 90 per cent of the material used in conventional wind systems. The energy kite generates power through a tethered airfoil that flies in large circles at an altitude of up to 300 metres, where the wind is stronger and more consistent than the winds reached by conventional systems.
How it works
An energy kite operates on the same principles as a conventional wind turbine, but is tethered to the ground like a kite. The energy kite flies in vertical loops controlled with a computer. The kite mimics the tip of a conventional blade.
Building only the tip of the blade lowers the cost and improves energy production. The kite captures energy at the blade tips through small turbine/generator pairs mounted on a kite. The energy travels down the tether to the grid.
Google hopes to start a pilot project to test the energy kite on a plot of land on the Big Island of Hawaii.
A prototype of the energy kite has been built.
https://www.youtube.com/watch?v=GSYMHzgLLn8
Kites Could Be the Future of Wind Power
This is a challenge for most forms of renewable energy, but most of our renewable energy comes from wind, which is among the most unpredictable. The behavior of wind near the ground, where turbines spin, is highly variable. But a few miles up winds are strong and steady, ideal for power generation. All we have to do is tap into them.
Conventional wind turbines can’t reach the necessary altitudes. There are some plans to lift a wind turbine to that height using balloons, but perhaps the best approach is to use a kite. Or a pair of kites, to be precise.
Kite Power Systems is a U.K. company developing a new way to draw power from the wind using specially-designed kites that fly in pairs hundreds of feet above the ground, taking turns extending and retracting. Their motion powers a generator on the ground, which can produce kilowatts to megawatts of power, depending on the size of the kites, as Real Engineering explains.
https://www.youtube.com/watch?v=vMTchVXedkk&feature=youtu.be
This setup has a number of advantages over traditional turbines. The kites are cheaper and easier to build and set up, all of the moving parts are at ground level for easier maintenance, and the system is much more durable and will last longer. The only part that’s likely to break is the tether, which is a simple steel cable that’s easy to replace.
This type of power generation could be the key to more widespread adoption of wind power. Depending on location, kite-based generators could provide stable, constant power almost every day of the year, eliminating the biggest disadvantage of renewable energy. Perhaps in a few years we’ll all have kites flying overhead, powering our homes and lives.
What Is a Wind Farm?
Wind farms are areas where many large wind turbines have been grouped together to “harvest” the power of the wind. These large turbines look a bit like super-tall, futuristic windmills.
A large wind farm can contain hundreds of wind turbines spread out over hundreds of miles. The land in between the turbines may be used for other purposes, such as regular agricultural farming. Some wind farms are also located offshore to take advantage of winds that blow across lakes or oceans.
Did you realize that wind energy is actually another form of solar energy? Winds are created by the combination of the rotation of the Earth, the irregular shape of the Earth’s surface and the uneven heating of the atmosphere by the Sun’s rays.
Wind farms are built in areas known to be especially windy on a regular basis. As the winds turn the blades of the turbines, the turbines convert the energy of the wind into mechanical power. Generators then convert the mechanical power into electricity that can be used to power homes just like other forms of energy.
If it’s easier, you can think of a wind turbine as the opposite of a fan. A fan uses electricity to make wind. Wind turbines do the opposite: they use the wind to make electricity! As the wind turns the blades of a wind turbine, the blades cause a shaft to spin. The spinning shaft connects to a generator that creates electricity.
If you’re wondering why scientists looked to the wind as an energy source, there are plenty of good reasons. Wind energy is free and renewable and, unlike conventional power plants, wind farms don’t emit pollutants or greenhouse gases.
On the negative side, wind farms can cost a lot of money to set up. Over time, though, their cost is competitive with other types of generating systems. Unfortunately, you can’t make the wind blow whenever you want it to, so wind farms can’t always meet electricity needs on demand.
Over time, scientists believe new technologies, such as using batteries to store wind power for peak demand times, will make wind power even more popular. Wind power already accounts for about 3% of the United States’ electricity. Experts believe wind power will account for 20% of the nation’s electricity by 2030.
Air pollution can be defined as the presence of toxic chemicals or compounds (including those of biological origin) in the air, at levels that pose a health risk. In an even broader sense, air pollution means the presence of chemicals or compounds in the air which are usually not present and which lower the quality of the air or cause detrimental changes to the quality of life (such as the damaging of the ozone layer or causing global warming).
Causes
Air pollution is probably one of the most serious environmental problems confronting our civilization today. Most often, it is caused by human activities such as mining, construction, transportation, industrial work, agriculture, smelting, etc. However, natural processes such as volcanic eruptions and wildfires may also pollute the air, but their occurrence is rare and they usually have a local effect, unlike human activities that are ubiquitous causes of air pollution and contribute to the global pollution of the air every single day.
Most Common Types of Air Pollutants
A large number of contaminants may pollute the air in a large variety of forms. Almost any toxic chemical could make its way into the atmosphere to pollute the air that we breathe. Aerosol particles (clouds of liquid and solid particles in a gas) that are found in the air may also contain pollutants.
The chemical compounds that lower the air quality are usually referred to as air pollutants. These compounds may be found in the air in two major forms:
Air Pollution Causes
Air pollution may be caused by various processes, either natural or anthropogenic (man-made). Some of them leave evident traces in the air; others can go unnoticed unless specific tests are conducted – or until you become ill from their effects.
Natural Causes
Anthropogenic Causes
Examples of Air Pollutants
In most cases, air pollutants cannot be seen or smelled. However, that does not mean that they do not exist in high enough amounts to be a health hazard! Additionally, a number of gases are linked to the so-called “greenhouse effect”, which means that those gases retain more heat and thus contribute to the overall global warming. The most common example of a greenhouse gas is carbon dioxide, which is emitted from many industrial processes. Another example is methane, which is also an explosive gas.
The Effects of Air Pollution on Human Health
Air pollution has serious effects on the human health. Depending on the level of exposure and the type of pollutant inhaled, these effects can vary, ranging from simple symptoms like coughing and the irritation of the respiratory tract to acute conditions like asthma and chronic lung diseases.
Skin problems and irritations can develop due to prolonged exposure to several air pollutants, and a variety of cancer forms may develop after inhaling air contaminants. Do not neglect potential diseases caused by air pollution.
Air pollutants that have serious negative effects on the human health can be classified as toxic and non-toxic.
Air Pollution Diseases
Air pollution is undoubtedly the most problematic type of pollution, as it may involve serious long-term health effects. It is made worse by the fact that everyone could be exposed – because everyone needs to breathe!
You can choose the water you drink, but you can’t do much about the air you breathe.
Additionally, many air pollutants can travel long distances from their source, posing risks to our health even in concentrations below the threshold of smell. In other words, we might not even feel that we are breathing polluted air. However, over long periods of time, even low concentrations of contaminants in the air may have devastating health effects. Obviously, the most exposed people are those working and living in polluted air environments (e.g. various industries and buildings with pollutants in indoor air due to various causes). Additionally, big city smog is a reality all over the world, involving outdoor air pollution and potentially affecting a large number of people.
There are two main types of air pollutants:
Air pollutants get into our bodies through the respiratory tract and lungs, where they potentially get absorbed into our bloodstream and circulate, affecting various other parts and organs.
Effects of Air Pollution on Human Health
The effects of air pollution involve a large variety of illnesses, starting with the simple irritation of eyes, nose, mouth and throat or diminished energy levels, headache and dizziness, but also potentially more serious conditions – of which the most common are:
Air Pollution Facts and Prevention Tips
While we can choose what we eat and drink, we cannot choose the air we are breathing. Thus any of us can be exposed to pollutants at one time or another, simply through the air we inhale. The effects of our exposure to air contaminants may vary based on the exposure dose: some may appear immediately, while others could develop over a long time after the exposure started. This is why it is always a good idea to evaluate possible past exposures (at home, work, etc.)
Additionally, similar with traveling via airplane vs. any other form of transport, pollutants travel in the air fast and are easily spread around over large areas, affecting many people even in their homes. This means that, while a toxic release/spill to the water and/or soil may be contained and treated, a release of toxic compounds into the air cannot be contained. It may spread quickly over large areas and pollute even remote areas with little or no human activity.
Indoor air poses more health risks than the outdoor air. While polluted air may diffuse everywhere and the ambient air may pose an overall health risk, various pollutants concentrate in enclosed spaces with poor or no air circulation, such as indoors. This is why exposure to various air pollutants usually happens indoors. This is also why good air circulation between indoors and outdoors is essential to reduce the health risks of breathing the air indoors. Thus, the main preventive measure to avoid exposure to air pollution is to keep the spaces you are in well ventilated (opening windows or having a system that circulates outdoor air continuously).
In many cases, exposure to polluted air is not perceived by any of our senses. This is because the concentrations of pollutants in the air that may create health risks are usually much below what we can smell, see, or taste. This is why, for example, the butane gas from cooking stoves or the natural gas coming from pipelines has some additives (substances) that give it smell. Otherwise, we would not be able to smell dangerous amounts of gas escaping from stoves, pipelines, etc. Imagine that, apart from the gas that comes through pipelines, in nature, no one adds any smelling compounds to the gas, thus if in certain areas gas is produced naturally you will not be able to feel it and it may even kill you. Therefore, never feel safe simply because you cannot feel any contaminants in the air!
Where to Pay Attention
Tips to Avoid Air Pollution
Solution
How does wind energy contribute to any form of pollution in air?
Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling. Wind turbines may also reduce the amount of electricity generation from fossil fuels, which results in lower total air pollution and carbon dioxide emissions
Can wind energy work well with other forms of energy?
Wind energy is a free, renewable resource, so no matter how much is used today, there will still be the same supply in the future. Wind energy is also a source of clean, non-polluting, electricity. Unlike conventional power plants, wind plants emit no air pollutants or greenhouse gases.
Reduce Indoor Air Pollution
Keep air purifying indoor plants
Very elegant solution to improving air indoors, that would also have a beneficial effect on our health, is keeping houseplants.
Many houseplants have the same ability as trees to metabolize air pollutants from indoor spaces as well as refresh air by removing carbon dioxide and replenishing oxygen levels. Plants with large leaves that originate from tropics and rainforests are especially effective in doing so.
Some examples of the best houseplants for cleaning indoor air are:
Common indoor toxins these plants can absorb include compounds such as formaldehyde, xylene, benzene, trichloroethylene, toluene, octane and carbon monoxide.
Further reading: The Best Air Purifying Houseplants
Open your windows
Opening your windows fully at least once a day for three to five minutes can replace stagnant and polluted indoor air with fresh air from outside.
It is important to let the air in your house circulate even for short periods of time because this way you let accumulated toxins out and decrease humidity that gathers from many indoor activities like cooking, doing laundry or taking a steamy shower.
One of the common issues of well-insulated houses is that indoor-outdoor air exchange is entirely disabled. While this is a desired effect when it comes to preserving heat and energy, it is not the best for maintaining healthy air quality inside. If that’s the case, the stagnant air in your house needs to be refreshed once a while by opening windows to create a little draft.
Do not forget to open your windows to ventilate a room if you must use any volatile chemicals, such as those found in paint strippers and paints. Better yet, look for low- or no-VOC products to avoid being exposed to the toxic fumes from these products in the first place.
Use essential oils
Essential oils are potent plant extracts that can be used for many purposes, including cleaning, purifying and freshening indoor air. They also offer an eco-friendly, healthy, and often more effective alternative to many chemical and synthetic products.
Using high quality essential oils in a diffuser will not only produce a nice scent throughout a room, you will also gain many health benefits from the complex natural compounds that the essential oils contain. For example, lavender oil with eucalyptus oil have calming properties; peppermint and chamomile oils are good for digestion and relieving symptoms of cold; rosemary oil improves concentration and memory
You can also use essential oils to make your own homemade cleaning products and personal care products. Some favorite oils that have been used for skin and hair are rose, cedarwood, thyme or clary sage oils.
For purposes of purity, safety, and to experience the most benefits, be sure to use only therapeutic grade essential oils from a reputable company.
Test your home for radon
Radon is an invisible, odorless and radioactive gas that naturally seeps up from the soil and bedrock of the Earth. It is one of the products of the radioactive decay of uranium, which can be found naturally in all rocks on this planet.
Most houses draw less than one percent of their indoor air from subjacent soils, but when your house is built on a highly permeable soil and foundations are not properly sealed, more than 10 percent of indoor air can come from the ground. This can lead to increased radon accumulation in the indoor air, even though its concentration in the soil is within safe limits.
It is good to know that radon can also seep from some building materials, such as granite countertops, alum shale concrete or volcanic tuff.
Radon is after smoking the second most frequent cause of lung cancer, so it is important to have your home tested for it. The testing procedure is very simple and inexpensive.
When radon levels in your house are above limits, some mitigation strategies for reducing its concentration need to be applied. One reliable technique is ‘Active soil depressurization, ‘which draws radon from beneath the foundation and emits it outside.
Keep indoor humidity low
We do many activities at home that make rooms damp. But did you know that in humid environments hundreds of different bacteria species, fungi and molds thrive? And that breathing their spores affects the health of your skin and respiratory tract?
Keep your home dry to prevent mold and mildew from proliferating. The U.S. Environmental Protection Agency recommends keeping an indoor humidity level of 30 to 60 percent.
You can do this by opening windows to exchange air inside your house. Remember that stagnant air retains all the moisture from your activities, so you should allow proper air movement by creating a draft inside at least once a day.
Use exhaust hoods or fans to reduce the level of moisture that can travel throughout the air when you cook or take shower. When showering, keep the bathroom door closed to not let excess humidity out. Rather leave the fan remove the moisture after you finish the shower.
Also, when possible dry your clothes outside.
If necessary, use a dehumidifier to reduce the humidity level of your home.
Hysure Portable Dehumifier is a great product to buy for this purpose. This dehumidifier is a product we recommend because it is easy to operate and is very quiet, so it will not disturb you when sleeping. Most importantly, it is efficient in removing moisture (approximately 750 ml of per day) and has low energy consumption.
Even customers’ reviews confirm that this dehumidifier performs well and is worth the money if you have humidity problems in some rooms. For example, one review states that it can decrease the amount of humidity by 20 percent in a garage. Other review highlights how easy its maintenance is.
Vacuum clean with a HEPA filter
It may sound surprising, but some vacuum cleaners actually contribute to indoor air pollution.
Yes, that’s right.
Vacuum cleaners without a proper filter, that would allow small particles escape back into the air, only worsen home air quality by stirring and redistributing pollutants.
To be sure you are not causing more harm when cleaning your house, use a vacuum cleaner that has a HEPA (High Efficiency Particulate Air) or ULPA (Ultra Low Penetration Air) filter.
HEPA filters should be able to capture 99.7 percent of particles as small as 0.3 micrometers. ULPA filters perform even better by retaining 99.9 percent of particles of 0.12 micrometers in size [16].
The design and cleaning efficiency are also important criteria. No HEPA filter will perform as promised if the vacuum cleaner is not properly sealed. Only well-sealed vacuum cleaners direct all collected particles to pass through the filter.
When looking for a new vacuum cleaner, make sure that it contains the real HEPA filter and not something labelled misleadingly as “HEPA-like” or “HEPA-type” filters. Beware of this marketing trick to confuse customers, as these types of filters might not comply with the standards of removing the most harmful particles.
Keep your home dust free
Do you know where dust comes from and how come it always reappears in your home?
According to researchers, most household dust is a mixture of organic matter and particulate matter from outdoor air, which is brought inside every time you, other family members or your pets come from the outside [17].
What should you imagine under this label?
Well, let’s see… It includes tiny particles like dead skin cells, pet dander, microscopic soil particles from your shoes, decomposing organic materials, microfibers from clothing, bacteria, molds, and dust mites.
Scientists have also found traces of many chemicals in common household dust. These chemicals usually originate from cleaning products, plastic items, paints, oil, cosmetics, pesticides or other products commonly used at home.
No one can write down a precise list of compounds contained in dust since they differ based on the area where you live, your lifestyle and your household, but every time you walk across a room, your kids play, pets run around, dust gets suspended into the air, from where it can be easily inhaled by you and your children.
You cannot prevent dust from entering your house, but you can minimize chances of your exposure to it by regular cleaning. Vacuum cleaners with HEPA filter should help in retaining most of the harmful particles (read the previous section to learn more about them).
Do not forget to clean your heating and air conditioning filters, ducts, and vents regularly as well. It will reduce particles accumulated over the time from re-circulating throughout the air in your home.
Use air purifiers with HEPA filter
If you live in an area with poor outdoor air quality, it’s worth considering the use of air purifier at home. On critical days when authorities issue health warning, you should keep your windows closed and use air purifier to minimize the risk of breathing polluted air.
For example, a two-year study in Salt Lake City, which chokes under a thick blanket of smog on cold winter days when inversion hits in, has found out that air purifiers with HEPA filters reduced fine-particulate matter (PM2.5) in observed households by 55 percent.
Similar results were confirmed by other studies, coming to a conclusion that at least 50 percent of particulate matter can be removed by a high-efficiency air filtration system [19].
Most modern air purifiers work with a multilayer filter system, consisting of a prefilter, a carbon filter, an antibacterial filter and a HEPA filter [19]. You can even find some ENERGY STAR purifiers on the market that offer better energy efficiency.
So, there are plenty of options to choose from.
Further reading: EPA’s Guide to Air Cleaners in the Home
Do not smoke indoors
Do not smoke inside your home. Cigarette smoke contains up to 70 carcinogenic substances and toxins that remain in the indoor air for a long time.
Passive exposure to the cigarette smoke can also cause serious health problems to other family members and pets.
Some of the health deteriorating compounds found in smoke include lead, arsenic, ammonia, carbon monoxide and nitrogen dioxide. By smoking in a confined space, the level of these compounds quickly exceeds safe limits without you even realizing the danger associated with inhaling them.
For example, nitrogen dioxide contributes to seemingly unrelated health problems such as ear infections and development of food allergies in children
Global Warming
Global Warming refers to average increase in the earth’s temperature due to increase in pollution which results in greenhouse effect which in turn leads to climate change. Global warming may lead to rise in the sea level due to melting of glaciers, shrinkage of forests, changes in the rainfall pattern and wide range of impacts on plants and humans.
The Intergovernmental Panel on Climate Change (IPCC), a group of over 2,500 scientists from countries across the world have determined that a number of human activities are contributing towards the growth of global warming by releasing excessive amount of greenhouse gases to the atmosphere.
These greenhouse gases such as carbon dioxide accumulate into the atmosphere and trap heat that would normally would exit into the outer space. Over the last few decades cars, industries and power plants have released tons of greenhouse gases into the atmosphere and this has caused the temperature of the earth to rise from .6 degree Celsius between 1901 and 2000. If nothing is done to stop global warming now then it could prove to be a big disaster for the human kind.
How Global Warming Works?
What actually happens to cause global warming to occur? The effect is the Earth’s sun warming the atmosphere. You know when you get into your car that’s been sitting for quite a while on a hot, sunny day? The temperature outside is significantly cooler than in your stifling car. What happens is the sun’s rays enter through the car’s windows. The heat is absorbed by the elements in the car, i.e., the seats, the carpet, the steering wheel, etc…. When those objects release the heat emitted by the sun, it doesn’t quite get all out. The heat is reflected back in by the car.
The heat radiated by the car’s elements is a different kind of energy than the rays of the sun that reflected through the windows. More energy is going in than is going out. The result is you blasting the air condition and rolling down the windows to cool off. This in essence is how climate change works. Climate change occurs naturally, over the course of thousands of years, but in the last 50, scientist have noticed a drastic incline of rising temperatures, including melting icecaps that should be taking thousands of years to melt, but are doing so now.
An increasing temperature on the planet can have domino-falling effects for the future of Earth. Widespread changes in the Earth’s climate would cause extreme weather changes, including, horrific storms, hurricanes, earthquakes, and other natural disasters. Ecological changes would mark the extinction of many types of species. With ecological changes, the ripple effect starts trickling closer to home. With ecosystems failing, our own environment becomes threatened. Not since the rise of the Industrial Revolution, has climate change been so rampant.
The greenhouse gases (GHGs) we produce have caused unprecedented motion to 3% increase of climate change. Thinking in terms of the future. We’ve only barely begun to scratch and tap into renewable energy sources. If people did their part to recycle, decreased the pollutants of oil and fossil fuels into the air, and became more self-aware, that 3 percent could drastically be reduced. It doesn’t have to be all about the future. Time is of the essence, and living in the present, our world and atmosphere could greatly be improved. Smog congestion and poor air quality are the leading causes of respiratory symptoms in the world’s heavily populated cities in China, Italy, and other countries.
Greenhouse Gases
Greenhouse Gases called carbon dioxide, methane, water vapour and other gases have heat trapping capacity and are needed to create greenhouse effect that keeps the earth warm which is required to support plants, animals and humans. Some of these greenhouse gases occur naturally while other are released in tons of capacity every year all over the world by us.
These gases are released when we drive cars, burn wood or coal, large power plants. Deforestation(cutting down of forests) is also a reason for the greenhouse gases because fewer trees means less carbon dioxide converted to oxygen. Now, when accumulation of these greenhouse gases grows, more heat gets trapped into the atmosphere and as a result few heat escapes backs into the space and it heat ups the earth surface.
The Greenhouse Effect
Global warming is caused by an increase in the greenhouse effect. The greenhouse effect occurs when certain gases in the atmosphere trap heat. These gases prevent the heat from escaping back into the space. The more greenhouse gases are in the atmosphere, the more heat gets trapped. It is the greenhouse effect that makes this planet warm otherwise it would have been too difficult for humans to survive on this planet. However, too much increase in the earth’s temperature due to increase in the number of greenhouse gases results in global warming.
The sun shines and its rays hit the Earth’s atmosphere and the surface of the Earth. Approximately, 30 percent of the energy gets reflected back into the space by clouds and snow fields and approximately 70 percent of the energy stays on the planet. The Earth’s oceans and land radiate the heat back to the space. While some of the heat escapes back into the space, rest of the heat gets absorbed by greenhouse gases like methane, carbon dioxide (CO2), nitrous dioxide (N2O), water vapor. The heat that could not escape out makes this planet more warmer than outer space.
Greenhouse gases increase the temperature of the planet by not allowing the heat to escape through it. When the temperature starts to change rapidly, it becomes more concerning. The Earth is wrapped by the layer of the heat-trapping gases. Whenever these gases enter the atmosphere, it acts similar to a blanket; traps heat into the atmosphere, and then alters climatic conditions globally.
Greenhouse gases enter into the atmosphere as a result of lot of human activities which include burning of fossil fuels and wood products. CO2 is a colorless gas that gets released during combustion of organic matter. Today, human and industrial activities are pumping in huge amount of CO2 into the atmosphere. More CO2 in the atmosphere means more energy absorption which results in increase in the earth’s temperature.
Methane is a combustible gas that gets released by extracting it from coal, decomposition of garbage in landfills, or from the bacteria in rice paddies. It is a used as a main component in natural gas. Like carbon dioxide, it also absorbs heat and prevent it to release back into the atmosphere. Methane can absorb as much as 20 times more heat than CO2.
Nitrous oxide (N2O) is another greenhouse gas released during industrial and agricultural activities. Nitrous oxide is released in large quantities due to the use of nitrogen fertilizer on the crops. N2O is not released in large quantities by humans as CO2 but N2O absorbs much more energy (about 270 times as much) than CO2. Therefore, it is required to curb the emissions of N2O a well.
The industry has boomed very swiftly, during the last few decades. These industrial sectors use fossil fuels, which increases greenhouse gases. These gases are the major reason for global warming. There is a huge pressure on the countries like U.S., China and India to cut down emissions of greenhouse gases to reduce the effect of climate change.
Whether people are in denial that the Earth is warming, or it’s simply a matter of not wishing to change designs, methods, and consumption, something is happening to the atmosphere. Evidence can’t be ignored of melting ice-caps, rising sea levels, increased storm activities in the last century than any other, and other effects occurring in the world. Think of the gears in a clock. Everything has to systemically work together to function properly. When we set one thing out of whack like climate change, catastrophic results are sure to follow. While we can’t fix global warming overnight, now is the time to act.
The Earth’s rising carbon dioxide levels have been tested as unsafe. Before the Industrial Revolution, carbon dioxide has never been higher than it is now, compared to past millions of years. Think of that intense, suffocating heat when you first get into your baking car that’s been out in the sun. It’s really not pleasant roasting. Imagine if climate changes escalates to that kind of boiling point. If global warming continues over the course of many years, human life might not be enjoyable, comfortable, or even sustainable. Maybe some of us feel impervious, like it’s not likely to impact our everyday life, but the truth is, it does, and will affect many future generations to come.
Future Of Global Warming
As we are going to more fossil fuels the accumulation of greenhouse gases in the earth atmosphere is going to rise and rise. And these greenhouse gases will raise the earth’s surface temperature with them. According to IPCC, the temperature of the earth will rise from 2 degree Celsius to 6 degree Celsius by the end of 21st century. With the rise in such temperature the glaciers and ice shelves around the world will start melting. Scientists project rising sea levels will increase between 7 and 22 inches by 2100. When the sea level will rise combined with the rise in the temperature of the sea, tropical storms such as tsunami could increase.
https://www.youtube.com/watch?v=oJAbATJCugs&feature=youtu.be
Natural and Man-Made Causes of Global Warming
Global warming is the increase in the earth’s average temperature due to the release of several greenhouse gases to the atmosphere by humans. Global warming is affecting many parts of the world. Due to global warming, the glaciers are melting which is causing the rise in the sea level. When the level of the sea rises, it causes danger to the people living in low lying areas.
When the level of the sea rises, it covers the plants and causes some of them to die. When they die, animals lose their main source of food. We, human beings lose our two sources of food, plants, and animals. It may also force people to lose their homes. In other words, the whole chain will get affected if nothing is done on time to stop global warming from spreading its wings.
With the global temperature increasing by 3%, many believe that global warming is on the climb. Right away, experts will say it’s time to save energy: Turn off lights when not in use, or carpool with your annoying co-worker who loves knock-knock jokes. We’ve all heard the advice by scientist greatly involved in global warming, and while their argument rests firm in data and conclusive research, are we the only ones causing global warming? The answer to that is a tricky one.
The United Nations formed a group of scientists called the Intergovernmental Panel on Climate Change, or IPCC to review the latest scientific findings and write a report summarizing all that is known about global warming.
Top 5 Natural Causes of Global Warming
Deforestation by nature is another leading cause of global warming. Natural forest fires are usually televised on the news, showing the devastation of mountain homes and communities. While this loss is tragic, the effects of these natural occurring forest fires pose a problem for the earth’s air.
Forest fires emit carbon-filled smoke into the atmosphere, and new forests’ growth is slow and not stable enough to produce the much-needed oxygen into the newly, suffocating carbon air. Natural forest fires will eventually run their course, but left in the ashes are polluting gases that get trapped in the atmosphere.
When frozen soil, constituting about 25% of the Northern Hemisphere, increases, it keeps in the carbon and methane gases. So, while you may be thinking about how it can be global warming when you’re still freezing in Tibet, the permafrost is actually leaking carbon into the earth’s atmosphere. While scientists cannot stop permafrost from emitting these gases, the earth’s melting ice caps at incredibly fast rates, are cause for concern.
According to the Environment Protection Agency (EPA), sunspots are increasing global temperature. Sunspots restrict the passing of solar plasma, which in turn gives off radiation. You don’t have to work for NASA to know radiation is a bad thing. Sunspots and solar flares are powerful and unstoppable.
They can change the energy radiating to earth’s atmosphere, and thus increase climate temperature. Solar flares, however, have been a naturally occurring event for millions of years. If only sunspots and solar flares were to blame, the world’s recent increased temperature would barely move.
If you only thought NASA was busy planning moon missions and orbiting outer space, think again. According to NASA, two-thirds of the gases stuck in the thick blanket is in the form of water vapor. This hitch in tow effect means rising temperature, rising vapor. The water vapor is unable to escape and thus results in hotter climate changes. NASA continues to work on water vapor solutions to reduce their effect on global warming.
Our friendly, furry, bizarre, and sometimes extreme pals in the animal kingdom are also to blame, sort of. While animals also breathe out carbon dioxide and methane, their small contribution is miniscule compared to humans and their consumption of non-renewable energy. Nature’s animal release of carbon dioxide, although minor, is still a natural causing factor in releasing more carbon dioxide into the atmosphere.
Top 7 Man-Made Causes for Global Warming
Deforestation is the cutting down of trees and plants to make way for any development activity. Mother nature taking out an entire forest is one thing, but the man doing it for the use of crop cultivation, fuel, and other consumption, is another. Each day our forests are bulldozed for the prospect of farms and factories. Fuel used for wood and charcoal only adds to the polluted gases in the atmosphere.
Our consumer commodities provided by forestry includes paper and lumber. The loss of our forests results in a chain reaction where too much carbon is released into the air, with not enough oxygen to combat it.
This means that it is very important to protect our trees to stop the greenhouse effect, and also so we can breathe and live. Deforestation is blamed for the rise in the greenhouse gases present in the atmosphere by cutting or burning them. New development projects, the requirement of land for homes and factories, requirement for wood and also soil erosion are the major factors that are causing deforestation, which in turn leading to global warming.
Pollution, whether it is vehicular, electrical or industrial, is the main contributor to global warming. Every day billions of vehicles release various gases into the atmosphere. This causes the Earth to warm up and increase its average temperature. Electricity causes pollution in many ways. Over 75% of electricity worldwide is produced by the burning of fossil fuels. Many gases are sent into the air when fossil fuels are burnt of which main is the carbon dioxide gas.
Fossil fuel like coal is burnt to produce electricity. Coal is the major fuel that is burnt to produce power. Coal produces around 1.7 times as much carbon dioxide per unit of energy when flamed as does natural gas and 1.25 times as much as oil.
We’re all well aware of the vast amounts of energy consumed every day by humans everywhere since our first memories. Nearly 40% of the U.S. release of carbon dioxide is due to the burning of fossil fuels-gasoline and electricity in our homes. Finding sources for renewable energy, clean-burning fuel options, and methods to cut back the amount of energy exhausted could cut that 40% significantly.
Industries, on the other hand, release various gases into the water and air. Carbon dioxide, methane and nitrous oxide are the major greenhouse gases. Different gases have different heat-trapping capabilities. Some of them trap more heat than carbon dioxide. Methane is much more effective than carbon dioxide in entrapping heat in the atmosphere. By driving cars, using electricity from coal-fired plants and heating up our homes from natural gases, we release carbon dioxide and other heat-trapping gases in the atmosphere.
When we throw garbage out of our house it goes to landfills. Landfills are those big chunks of garbage that stink and can be seen in so many places around the world. The garbage is then used by big recycling companies to make some useful products out from it.
Most of the time that garbage is burnt which releases toxic gases including methane into the atmosphere. These enormous amounts of toxic greenhouse gases when go into the atmosphere make global warming worse.
Another cause of global warming is overpopulation. Since carbon dioxide contributes to global warming, the increase in population makes the problem worse because we breathe out more carbon dioxide in the atmosphere. More people means more demand for food, more carbon dioxide in the atmosphere, more demand for cars and more demand for homes.
More demand for food will lead to more transportation since the movement of goods and services is done by the transportation sector. More demand for cars means more pollution in the air and more traffic on the roads which means longer waiting time on the traffic lights and that will result in the burning of more fuel. More demand for homes means cutting down of plants and trees to make way for homes, schools, and colleges.
Oil and coal are the two main culprits in producing greenhouse gases. Methane, like carbon dioxide, creates a thick shield over the atmosphere trapping the sun’s rays. With the continued use of mining operations, these harmful gases will only increase.
Think of the countless farmlands across the heartland of America. The unique thing about fertilizer is that it produces nitrous oxide once it absorbs the soil. Nitrous oxide is 300 times more dangerous than carbon dioxide. The EPA strongly warns that the farming industry’s use of fertilizer is one of the leading causes of global warming.
Remember earlier when the animal world was sort of to blame for emitting carbon dioxide into the air? Well, the bigger party to blame is us. Due to our Western diet and habits, the raising, grazing, and manufacturing of animal products contribute greatly to the rise of global temperature.
According to research, 51% of the greenhouse gases: methane, carbon dioxide, and nitrous oxide are caused by animal agriculture. If we would stop ordering juicy cheeseburgers, excessive amounts of carbon dioxide by animals stop emitting the atmosphere.
There are a number of natural causing factors involved in global warming. While scientists continue to observe and study sunspots, water vapor, and permafrost, there is little that can be done to penetrate such vast forces. What we can do, however, is truly evaluate and prioritize how we treat and value our planet.
Global warming contributes to not only the fall of ecosystems, weather patterns, and rises in sea levels but the overall quality of life we wish for on this planet. There are many things we can do to help reduce the amount of energy we consume. Switching to renewable energy, changing lifestyles and diets, and controlling our consumption of non-renewable products, can greatly make a huge difference.
Simple Ways To Stop Global Warming
By being just a little more mindful, we all can play our part in combating global warming. These easy tips will help preserve the planet for future generations. Scientists won’t have to defy the space-time continuum to keep life on planet earth from continuing.
MORE DETAILS
“Al Gore and his Views on Global Warming”
https://www.conserve-energy-future.com/al-gore-and-global-warming.php
You can gather some more information by looking at the videos which is given below:
Wind Power
https://www.youtube.com/watch?v=SQpbTTGe_gk
Air pollution – a major global public health issue
https://www.youtube.com/watch?v=Tds3k97aAzo
Indoor Air Pollution
https://www.youtube.com/watch?v=bSCOnFLTzGQ
How to Protect Yourself From Air Pollution
https://www.youtube.com/watch?v=aK3BWmDC0H4
What is Pollution & its Types and Prevention
https://www.youtube.com/watch?v=5FWvbui6ook
The Biggest Threat from Air Pollution- Global Warming
https://www.youtube.com/watch?v=J__CKqcdAjU
https://www.youtube.com/watch?v=PqxMzKLYrZ4
Methane emissions and global warming
https://www.youtube.com/watch?v=3m0OSVodXlw
PDF NOTE
teach LKG students https://www.giftofcuriosity.com/introduction-to-land-air-and-water-preschool-geography/
BREATHING CLEANER AIR
Ten Scalable Solutions for Indian Cities
Clean Air Solutions Systems for Cleaner Air- Zehnder
https://cms.esi.info/Media/documents/Zehnd_ZehnderCAS2010_ML.pdf
https://www.epa.gov/clean-air-act-overview
http://ec.europa.eu/environment/pubs/pdf/factsheets/air/en.pdf
Greenhouse
https://www.conserve-energy-future.com/GreenHouseEffect.php
https://www.conserve-energy-future.com/15-wonderful-ways-reduce-greenhouse-gases.php
Spend More Time Outside
https://www.enkivillage.org/fun-things-to-do-outside.html
https://www.psychologytoday.com/intl/blog/minding-the-body/201304/nine-ways-relieve-stress-gardening
https://www.bustle.com/articles/114893-how-to-spend-more-time-outside-in-7-sneaky-ways