1. AIR POLLUTION:
Court weighs challenge to EPA action on hazardous emissions
A federal appeals court today tackled a Sierra Club claim that U.S. EPA hasn't done enough to set emissions standards for three hazardous air pollutants. At issue in the U.S. Court of Appeals for the District of Columbia Circuit is EPA's 2011 issuance of what is known as the "90 percent notice," in which the agency says it has done its duty under the Clean Air Act to set standards for seven hazardous air pollutants. Go to story #1
