One part of the world wants biofuels to keep our cars running; another part of the world just wants to eat. Is the race to put more food crops in the biofuel stream contributing to the world-wide food crisis? And are biofuels the way to go to lower the amount of greenhouse gases causing global warming? In the first hour of Midday today: A talk with Timothy Searchinger, a Princeton-based scientist who contributed to a study that measured the efficiencies of biofuel production and concluded that corn-based ethanol, instead of producing a 20% savings, would nearly double greenhouse emissions over 30 years and increase greenhouse gases. Biofuels from switchgrass, if grown on U.S. corn lands, would increase emissions by 50%. This result raises concerns about large biofuel mandates in American agriculture.

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