NYT: The Environmental Protection Agency has said it will rule by the end of this month on whether to allow gasoline retailers to sell a mixture that is 15 percent ethanol and 85 percent unleaded regular, a change from the current maximum of 10 percent ethanol. Coalitions have lined up – on one side, the corn farmers and ethanol producers, and on the other, the oil refiners, auto companies, manufacturers of gasoline-powered equipment and companies that use corn to raise livestock. Some …