In California, officials say the worst natural gas leak in U.S. history has been capped, after it spewed methane gas into the atmosphere for nearly four months. The leak began in October at an underground natural gas well operated by Southern California Gas in the Porter Ranch neighborhood above Los Angeles. Methane is a powerful greenhouse gas. At its peak, the uncontrollable leak spewed the equivalent pollution of 4.5 million cars every day. Activists and residents are calling for the permanent closure of all 114 wells at the facility.
California: Officials Say Worst Gas Leak in U.S. History Now Capped
HeadlineFeb 19, 2016