Western Energy Leases

Workers tend to a well head during a 2013 hydraulic fracturing operation outside Rifle, in western Colorado. A federal judge has blocked oil and gas drilling on almost 500 square miles in Wyoming and says the government must consider cumulative climate change impacts of leasing public lands across the U.S. for energy development The order marks the latest in a string of court rulings over the past decade faulting the government's consideration of emissions when issuing energy leases. (AP Photo/Brennan Linsley, File)