News Climate Gas flares are leaking five times as much methane than previously thought More lit flares and improved efficiency would be like taking nearly 3 million cars off the road Flares, like the ones here, burn off the natural gas emitted during oil and gas production, turning methane into less potent carbon dioxide. But the efficiency of these flares is much lower than previously thought. Alan Gorchov Negron/University of Michigan, Yulia Chen/Stanford University Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Bethany Brookshire September 29, 2022 at 2:00 pm In many oil and gas producing regions, flames light the sky.