The Obama administration’s decision to crack down on the methane leaking from nearly 1 million oil and gas wells across the country promises to reduce greenhouse gases but also imposes new costs on an industry that’s already reeling. The administration’s plan, unveiled during Thursday’s summit between President Barack Obama and Canadian Prime Minister Justin Trudeau, targets reductions of a potent greenhouse gas that pound for pound is 84 times more powerful than carbon dioxide at warming the atmosphere when measured over two decades. Environmentalists cheered the approach, saying the focus on methane delivers big bang for the buck, with a more immediate climate payoff than slashing carbon dioxide from power plants. But industry leaders cried foul, saying new methane rules could quash domestic drilling, heaping more pain on energy companies that have idled more than 1,000 rigs and gutted more than 250,000 jobs since oil and gas prices started […]