Air Pollution
Air pollution is the contamination of our air with substances that are harmful to health and to our environment. Air pollution can be made up of tiny pieces of solid material (called particulate matter), droplets of liquid material or gases. Sources of air pollution include car exhaust, incineration of waste, and emissions from factories. Find out more by exploring these links:
> Learn the Issues: Air
(from Environmental Protection Agency)
> Air Fact Sheets
(from Maryland Department of the Environment)
> Air Pollution
(from U.S. National Library of Medicine)
