Methane From Landfills Is a Big Driver of Climate Change, Study Says The New York TimesA potent planet-warming gas is seeping out of US landfills at rates higher than previously thought, scientists say CNNAerial surveys show US landfills are major source of methane emissions ReutersMethane From US Landfills 40% Greater Than Reported, Study Finds BloombergOil and gas areas of Mountain West leak up to nine times more methane than EPA thinks KUNR Public Radio