Methane is a powerful greenhouse gas, 80 times more potent at warming the atmosphere than carbon dioxide. In 2014, a California law required statewide methane emissions to be cut by 40% by 2030 from 2013 levels. Currently, the local natural gas utility estimates that methane emissions in the Los Angeles area are decreasing at a rate of about 5.8% per year.
Click here for original story, Methane emissions in LA are decreasing more slowly than previously estimated
Source: Phys.org