Soybeans in a field in Springfield, Neb., on Wednesday. The nation's corn and soybean farmers will bring in by far the largest harvest ever this year, driving down the price of the commodities, according to the U.S. Department of Agriculture. Nati Harnik/AP hide caption

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A sign on the pump advertises the ethanol content of the gasoline as a motorist reaches for the gas pump in his truck at a filling station in Bellmead, Texas. LM Otero/AP hide caption

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A Tunisian protester holds a baguette while taking to riot police in January 2011. Martin Bureau/AFP/Getty Images hide caption

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Somali girls line up to receive a hot meal in Mogadishu last year after the worst drought in the Horn of Africa in decades, compounded by war, put millions in danger of starvation. Roberto Schmmidt/AFP/Getty Images hide caption

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