Learn about pollutants from vehicles and engines that cause harmful health effects and climate change.

Find information about wise driving, choosing fuel efficient vehicles, and other tips for decreasing your carbon footprint.

View successes from the Clean Air Act, strategies for the future, and a timeline of accomplishments.

Learn about air pollution from transportation and the EPA’s programs to reduce it.

Learn about smog, soot, ozone, and other air pollution, as well as EPA programs to reduce them.

Key issues, websites and programs related to transportation, air pollution and climate change.