"not all biofuels are beneficial when their full environmental impacts are assessed, [and] some of the most important, such as those produced from corn, sugarcane, and soy, perform poorly in many contexts."
"nearly half (twelve of twenty-six) of biofuels assessed, including corn ethanol, have greater aggregate environmental costs than fossil fuels."
"low yield of biofuels crops typically necessitates large-scale monocultures, which often require substantial inputs of fertilizers, pesticides, and even water."
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