How much has air pollution been reduced in the last three decades?

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asked Jun 9, 2019 139k views

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Vikas Dadheech · Answer 1 · 2019-06-13T14:29:29+0000

The clean Air Act of 1970 is a US federal law intended to reduce air pollution and protect air quality. The act-which underwent major revisions in 1990 and 2003 deals with ambient air pollution as well as source specific air pollution.

How much has air pollution been reduced in the last three decades?

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