Biofuels, Global Warming and Land-Use

    Two recently published scientific studies have raised new concerns about the environmental benefit of biofuels like enthanol. One such study, published in Science Magazine by TIM SEARCHINGER, shows that using land to grow crops like corn and soybean results in increased carbon emissions, one of the leading causes of global warming. We talk with Searchinger and KATE HORNER of Friends of the Earth.
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