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  • PBS NewsHour

PBS NewsHour | What's Causing Unusually Hot Temperatures in U.S.? | PBS

Duration: 06:00
Program: PBS NewsHour #10362
Broadcast Date: Jul. 2, 2012

Lack of water, "the great air conditioner", is causing unusually high temperatures and extreme weather events in the United States, Kevin Trenberth with the National Center for Atmospheric Research tells Judy Woodruff.

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Post Date: July 2, 2012