The entire world is aware of the potential and real effects of environmental pollution. The continued alteration of the natural world is a topic of great concern. One of the kinds of pollution considered to be responsible for global climate change is air pollution. Natural influences are constantly putting a wide variety of chemicals into the atmosphere. However, in the last century humans have increased the output of atmospheric chemicals as a result of emissions from industrial plants and automobiles.

Governments around the world have passed laws forcing industries to reduce toxic emissions. Unfortunately, one of the leading sources of pollution is the exhaust from gasoline–powered vehicles, which emit carbon dioxide among other polluting agents, as a by-product of internal combustion engines. This gas has been found to contribute to global change by trapping the Sun's heat at Earth's surface. As...