When we think of air pollution, most of us think that the air is fine. That is, if we are not a colored haze hanging over our heads, or black particles rain in our cities. But poor air quality, like a virus, may not always seem at first glance. The Air Quality Index (AQI) is a type of test used by the Environmental Protection Agency (EPA) and has shown that many types of pollution fact.There hogging our airspace, these thieves to enter our bodies and silence time causing disease, diseases like bronchitis, lung cancer and heart defects. Moreover, contamination of plants and trees, animals and threaten to destroy streams where the fish are contaminated.Sulfur (SO2) is a substance that comes from volcanoes, which may have little control over. It is also done by various industrial processes such as coal and oil. Nitrogen dioxide (NO2) comes when a mixture of hot air and fuel, as it is located in the emissions of internal combustion engines of our cars and sport utility vehicles and industrial equipment. At low doses, these two compounds have a small effect, but in cities with high costs of factories and cars, the results can be overwhelming for our eastern states of USA air.28 showed that large amounts of sulfur dioxide to keep their air due to heavy industry in this area. Thus, in 2005, EPA proposed a new rule, the Clean Air Interstate Rule (CAIR), which reduce sulfur dioxide by 70% and 60% of nitrogen oxides in 2015. Apparently this is the cost of health would be reduced by one billion U.S. dollars and may help prevent early death.Acid rain is another example of how you never see what is in our atmosphere. Acid deposition, as we call it, is caused when sulfur compounds, carbon and nitrogen combine with atmospheric deposition and to produce acid. Acid rain pollution is measured regularly and its root cause is the energy we consume in our normal life, modern. Coal, oil and gas play an important role in the creation of this dirty air. One or more of these fossil fuels used for electricity generation, and could not live without the usual need today in the world.The first weight we give to renewable fuels begins to manifest in our environment and we can ask whether the reversal of the damage accumulated until the afternoon? The air is getting beat up over a hundred years and the evolution of the health of millions of people are beginning to show. U.S. EPA was established in 1970 and today has 17,000 employees, who work hard to educate people, conduct research, and ways to reduce pollution and keep safe from public scrutiny that is. Ideally.Now us the basic information, it is time to focus on what to do next. We have to be a joint effort of the United States and other countries to undo what has been abused in the past. Start with your immediate environment and community and be involved. The more you learn, the more you will understand the importance of air quality now and forever in the future.