Greenland Ice Cores show Impact of US Clean Air Act on Climate

April 11, 2014 5:17 PM

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Greenland Ice Cores show Impact of US Clean Air Act on Climate

Samples from the Greenland ice sheet suggest the US Clean Air Act had a clear effect on conditions in the Earth's atmosphere. The discovery by University of Washington atmospheric scientists also alludes to a link between air acidity and nitrogen preservation in snow layers, according to a release by the school.

While the research team had been interested in studying smog, it discovered a link in the geologic record between smog and acid rain. The US Clean Air Act of 1970 was a reaction to air pollution increases and incidents of acid rain and required coal power plants and other polluters to scrub sulfur o...

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