What's Causing Unusually Hot Temperatures in the U.S.?

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

Other Authors: Infobase,, MacNeil/Lehrer Productions.
Format: Video
Language: English
Published: [Place of publication not identified] : MacNeil/Lehrer Productions, [2012]
Distributed by Infobase,
Physical Description: 1 online resource (1 video file (5 min., 59 sec.)) : sound, color.
Subjects:

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