U.S. drought crisis

Associated Press
Corn stalks struggling from lack of rain and a heat wave covering most of the country are seen Monday, July 16, 2012 in Farmingdale, Ill. The nation's widest drought in decades is spreading. More than half of the continental U.S. is now in some stage of drought, and most of the rest is abnormally dry. (AP Photo/Seth Perlman)

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Triple-digit temperatures and weeks without rain withered and destroyed many crops in the Midwest, sending commodity soybean and grain prices soaring in 2012.

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