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Air pollution may have killed 30,000 people in the United States in a single year, study says

More than 30,000 deaths in the United States in a single year may have been caused by air pollution, according to a study published Tuesday.  Those deaths came even as almost every county in the United States remained within federal air quality standards. That suggests more stringent regulations are needed to protect human health, researchers say.  Read more....

 

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