6/13/2013

Summer rainfall declined in the urban parts of Atlanta compared with nearby rural areas in the middle decades of last century, according to research from Georgia State University. "The reason behind this is that the increased air pollution was suppressing rainfall, so it was making the clouds less productive," said Jeremy Diem, an associate professor of geography. However, rainfall began to increase once again after the passage of the Clean Air Act in 1970, Diem found.

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