Agence France-Presse: The US Environmental Protection Agency proposed rules Tuesday to reduce toxic emissions from power plants across 31 states on the US eastern seaboard and the nation’s capital. The aim, said the EPA, is by 2014 for sulfur dioxide (SO2) levels to be reduced by 71 percent over 2005 levels, said the agency. In the same period, nitrogen oxides (NOx) would be cut 52 percent. "This rule is designed to cut pollution that spreads hundreds of miles and has enormous negative impacts on …