In this July 16, 2013, roofer Juan Belis sweats as he works in the midday heat atop a building, in Philadelphia. Global warming is rapidly turning America into a stormy and dangerous place, with rising seas and disasters upending lives from flood-stricken Florida to the wildfire-ravaged West, the National Climate Assessment report concluded Tuesday, May 6, 2014. (AP Photo/Matt Rourke)
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