DES MOINES, Iowa (AP)--An agricultural economist and founder of a Washington-based environmental think tank said Thursday that ethanol production will consume much more corn than the government has estimated and could result in shortages of corn for livestock feed, driving up production costs and causing higher food prices.

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DES MOINES, Iowa (AP)--An agricultural economist and founder of a Washington-based environmental think tank said Thursday that ethanol production will consume much more corn than the government has estimated and could result in shortages of corn for livestock feed, driving up production costs and causing higher food prices.