Associated Press: A federal appeals board has denied a request by environmental groups concerned about climate change to delay selling coal leases at two surface mines in northeast Wyoming’s Powder River Basin. Sale of the leases next to Foundation Coal’s Belle Ayr Mine and Peabody Group’s Caballo Mine could allow the surface mines to expand. Burning coal in power plants releases the greenhouse gas carbon dioxide. The groups WildEarth Guardians, Sierra Club and Defenders of Wildlife sought the delay so the U.S….