Maine-Anjou bulls eat a corn-based fattener feed in Owasso, Okla. Rising corn prices have led to higher costs for farmers -- and more expensive beef. Brandi Simons/Getty Images hide caption

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Time (Finally) For An Innovation? In 1941, Henry Ford unveiled a concept car that ran on ethanol and gas. The car's plastic body was made from soybean and fibers such as field straw, hemp and flax. AP hide caption

itoggle caption AP