January 8, 2013
Senior program manager Scott Walker points to a computer display showing power usage and availability in the Tennessee Valley Authority System Operations Center at TVA headquarters in Chattanooga, Tenn. A TVA official said the utility was equal to the air conditioning load. 2012 was 3.2 degrees warmer than the average for the entire 20th century. Last July was the also the hottest month on record.
Stories this photo appears in:
America set an off-the-charts heat record in 2012.
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