US Environmental Protection Agency
Epa: Air Quality in My City
How does the air quality in my city compare with other cities? What time of year has the best air quality? Has the air quality in my city improved? AirCompare provides local air quality information to help you make informed,...
CK-12 Foundation
Ck 12: Life Science: Health Hazards of Air Pollution
[Free Registration/Login may be required to access all resource tools.] The World Health Organization (WHO) reports that 2.4 million people die each year from causes directly related to air pollution. Worldwide, there are more deaths...