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Clean Air World

Welcome to Clean Air World

The National Association of Clean Air Agencies (NACAA, formerly STAPPA/ALAPCO) welcomes you to Clean Air World. Use this web site to learn about air pollution, find the latest news and information on important air topics and link to governmental air pollution control agencies around the world  

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Did You Know?

When coal is burned in a steam electric power plant, the steam turns a turbine which drives a generator which produces electricity. During this process, about 2/3 of the energy in the coal is used up to make electricity, or becomes waste heat, and only 1/3 winds up being delivered to users as electricity.