An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Transportation, Air Pollution, and Climate Change

What You Can Do

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

Accomplishments & Successes

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


  Carbon Pollution

""Learn about transportation and climate change, as well as EPA programs to reduce carbon pollution.

Other Air Pollution

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