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Drought US

Corn plants struggle to survive in a drought-stricken farm field on July 19, 2012 near Oakton, Indiana. The corn and soybean belt in the middle of the nation is experiencing one of the worst droughts in more than five decades. Indiana was the nation's fourth largest corn producer in 2011. (Photo by Scott Olson/Getty Images)

U.S. drought crisis

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