‘Garbage Lasagna’: Dumps Are a Big Driver of Warming, Study Says

They’re vast expanses that can be as big as towns: open landfills where household waste ends up, whether it’s vegetable scraps or old appliances.These landfills also belch methane, a powerful, planet-warming gas, on average at almost three times the rate reported to federal regulators, according to a study published Thursday in the journal Science.The study measured methane emissions at about 20 percent of about…