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Drought US

As water recedes, the bottom of Celery Bog continues to crack and dry out Wednesday, July 11, 2012,in West Lafayette, Ind. Large areas of the bog that are normally covered with water now give way to a variety of thick weeds. Not much can be done to raise the Celery Bog's water level. So naturalists are trying to learn from the effects of the statewide drought, which has caused much of the West Lafayette wetland to evaporate.(AP Photo/Journal & Courier, John Terhune)

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.