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2012: Hottest Year on Record for Continental U.S.
Temperatures across the continental United States soared in 2012 to an all-time high, making last year the warmest year on record for the country by a wide margin, scientists say.

Temperatures across the continental United States soared in 2012 to an all-time high, making last year the warmest year on record for the country by a wide margin, scientists say.
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