http://www.businessweek.com/ap/2012-08-08/ouch-july-in-us-was-hottest-ever-in-history-books
This would not have happened in the absence of human-caused climate change," said Pennsylvania State University climate scientist Michael Mann
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Drought is a major player because in the summer "if it is wet, it tends to be cool, while if it is dry, it tends to be hot.
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