New York and six other states say they plan to sue the U.S. Environmental Protection Agency over methane emissions from oil and gas drilling.
Attorney General Eric T. Schneiderman claims in a release Tuesday that the EPA is violating the Clean Air Act by failing to address the emissions. Methane is a potent greenhouse gas. Other major sources come from landfills and livestock.
Howard Feldman, a spokesman for the American Petroleum Institute, says the lawsuit "makes no sense" since EPA has already passed rules on methane emissions.
Federal climate researchers say they haven't yet seen signs that increased drilling is affecting global methane levels, but they're worried about the threat.
Schneiderman says Connecticut, Delaware, Maryland, Massachusetts, Rhode Island, and Vermont joined in sending a required 60-day notice to EPA.