Question: Explain the problem that existed in the 1970s for many metro areas in the U.S. with regard to air pollution control regulations. What policy innovation

Explain the problem that existed in the 1970s for many metro areas in the U.S. with regard to air pollution control regulations. What policy innovation was introduced to address this problem, and how did it work?

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In the 1970s many metropolitan areas in the US faced significant air pollution problems particularly related to smog and other pollutants emitted by v... View full answer

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