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Study: Birth Weights Rose When China Curbed Air Pollution

In the summer of 2008, Chinese authorities took various steps to reduce air pollution as Beijing hosted the Olympic Games. University of Rochester professor David Rich said that "in the years before and after the games, pollution levels were about twice as high as they were during the games, a third [higher] to twice as high. You go from a very heavily polluted city to an only moderately polluted city.” Rich said that temporary improvement in air pollution gave him and his...

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