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The U.S. Environmental Protection Agency (EPA) is deferring greenhouse gas permitting requirements for carbon dioxide (CO2) emissions from biomass-fired and other biogenic sources for three years. Even though biofuel combustion emits CO2, biomass burning will be permitted in the interim as a form of greenhouse gas emissions-control technology in fossil-fueled facilities. EPA explains this seeming conflict by contending that more time is needed to "weigh the science." How can biofuels be included in a national energy mix without regard to environmental impact?
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