The U.S. Supreme Court is set to hear oral arguments Nov. 29 in a major global-warming case. In Massachusetts v. Environmental Protection Agency, the state argues that the Clean Air Act gives EPA authority to regulate carbon dioxide and other greenhouse gases. EPA said in 2003 the law does not give it the power to limit such pollutants in vehicle tailpipe emissions to address climate change concerns. An appeals court in 2005 ruled in EPA's favor.