By Deborah Zabarenko WASHINGTON (Reuters) - So far, 2012 has been the warmest year the United States has ever seen, with the warmest spring and the second-warmest May since record-keeping began in 1895, the U.S.
Read More »By Deborah Zabarenko WASHINGTON (Reuters) - So far, 2012 has been the warmest year the United States has ever seen, with the warmest spring and the second-warmest May since record-keeping began in 1895, the U.S.
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