Every day, the average person inhales about 20,000 liters of air.  Every time we breathe, we risk inhaling dangerous chemicals that have found their way into the air.

Air pollution includes all contaminants found in the atmosphere.  These dangerous substances can be either in the form of gases or particles.

Air pollution can be found both outdoors and indoors.  Pollutants can be trapped inside buildings, causing indoor pollution that lasts for a long time.

The sources of air pollution are both natural and human-based.  As one might expect, humans have been producing increasing amounts of pollution as time has progressed, and they now account for the majority of pollutants released into the air.

Air pollution has been a problem throughout history.  Even in Ancient Rome people complained about smoke put into the atmosphere.

The effects of air pollution are diverse and numerous.  Air pollution can have serious consequences for the health of human beings, and also severely affects natural ecosystems.

Because it is located in the atmosphere, air pollution is able to travel easily.  As a result, air pollution is a global problem and has been the subject of global cooperation and conflict.

Some areas now suffer more than others from air pollution.  Cities with large numbers of automobiles or those that use great quantities of coal often suffer most severely from problems of air pollution.

Air Pollution - Causes
Air Pollution - Effects
Air Pollution - Solutions

Indoor air quality

Newsgroup on air pollution