October 22, 2013 The federal government finally has a plan for winters at Yellowstone National Park that both fans and foes of snowmobiles say they can live with. Within two years, only the cleanest and quietest of the vehicles will be allowed inside the park.
October 15, 2013 The Supreme Court has agreed to review an Obama administration policy that requires new power plants and other big polluting facilities to apply for permits to emit greenhouse gases. Industry groups argue that getting these permits causes delays in big projects that could help revive the economy.
September 20, 2013 Under the proposal from the Environmental Protection Agency, new plants that run on coal would be permitted to emit only about half as much carbon dioxide as the average coal plant puts into the air today. Emissions from the electricity industry are already declining as utilities turn to natural gas and wind farms.
September 16, 2013 Five years ago, a Canadian company proposed building the Keystone XL pipeline to connect Canada's tar sands oil development with the big U.S. refineries on the Gulf Coast. The southern stretch of this pipeline is nearly finished, but the northern stretch is still under study.
September 4, 2013 Decimated by hunters, insecticides and other human pressures in the 1960s and 1970s, America's emblematic bird is once again flying high. Roughly 10,000 mated pairs now nest in the continental U.S., up from about 500 in the 1970s. But more birds also means fierce competition for territory and mates.
August 16, 2013 The carvings etched into limestone boulders near Pyramid Lake in western Nevada show that the early North Americans were surprisingly creative artists. The carvings, which are at least 10,000 years old, are abstract, geometric designs including shapes that look like diamonds and trees.
August 14, 2013 The electricity system is experiencing growing pains as the grid is beginning to rely on an increasing amount of renewable, particularly unpredictable sources of power like wind farms and solar panels. So grid operators are turning to individual customers to beef up redundancy and capacity.
August 7, 2013 The environmental agency has proposed permits that would allow oil companies to continue releasing contaminated wastewater onto the Wind River Reservation in central Wyoming. NPR found last year that the EPA has been allowing oil companies to send so much wastewater onto dry land that it was creating raging streams.
July 25, 2013 Since the 1930s, Louisiana has steadily been losing land that protects it from hurricanes and other disasters. The government board charged with protecting New Orleans from flooding sued the oil and gas industry Wednesday, arguing they are responsible for a big part of the problem.