Aviation and the Environment
Aviation contributes a modest but growing proportion of total U.S.
emissions, and these emissions contribute to adverse health and
environmental effects. Aircraft and airport operations, including those
of service and passenger vehicles, emit ozone and other substances that
contribute to local air pollution, as well as carbon dioxide and other
greenhouse gases that contribute to climate change. EPA estimates that
aviation emissions account for less than 1 percent of local air
pollution nation-wide and about 2.7 percent of U.S. greenhouse gas
emissions, but these emissions are expected to grow as air traffic
increases.
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