Talk:Air pollution

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Revision as of 13:05, 17 September 2010 by imported>Daniel Mietchen (→‎40 years of the US Clean Air Act: new section)
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 Definition:  The presence of contaminants or pollutant substances in the air (air pollutants) that interfere with human health or welfare, or produce other harmful environmental effects. [d] [e]
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40 years of the US Clean Air Act

For an intro, see here. --Daniel Mietchen 19:05, 17 September 2010 (UTC)

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