Appeals court grants Trump request to delay mercury air pollution case

A U.S. appeals court on Thursday granted a request from the Trump administration to put litigation on hold in which states and industry groups are challenging an Obama administration pollution control rule for mercury and other toxic emissions from power plants.The U.S. Court of Appeals for the District of Columbia Circuit canceled oral arguments that were due to take place on May 18.The rule, known as the MATS rule, has been in place for years and utilities have already complied by upgrading or