(October 2, 2018, 12:58 PM EDT) -- SAN FRANCISCO — The Sierra Club and 17 other environmental groups on Sept. 28 sued Secretary of the Interior Ryan Zinke and other members of the Trump administration in California federal court, challenging the administration’s decision to rescind the 2016 Waste Prevention Rule that pertains to methane flaring by hydraulic fracturing operations, arguing that the decision “ignores” the administration’s legal obligations (Sierra Club, et al. Ryan Zinke, et al., No. 18-5984, N.D. Calif.)....