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Methane Hunters: What Explains the Surge in the Potent Greenhouse Gas?
Every year, 6,000 flasks arrive at a laboratory in Boulder, Colorado. Inside each is a sample of air, taken from one of a chain of 50 monitoring stations that spans the globe.
Related Knowledge Center: Air emissions
State of Play
More than 30 years after the last major update of the Clean Air Act, the U.S. Supreme Court has upended the ability of Congress to give the Environmental Protection Agency and other federal agencies broad scope to combat air pollution, including the emission of greenhouse gases. Meanwhile, further Biden administration efforts to limit emissions face opposition in the courts.