The U.S. Court of Appeals for the District of Columbia Circuit dismissed a lawsuit brought by several meat industry groups who challenged an Environmental Protection Agency rule. The rule exempts producers from a requirement that gas and biomass-powered ethanol plants built between 2008 and 2009 demonstrate that their fuels have 20 percent fewer lifecycle greenhouse gas emissions than petroleum based fuels. The meat industry groups claimed that the rule would incentivize corn producers to reserve more of their output for ethanol production and, consequently, drive up feed prices.