Bloomberg: Environmental groups are asking the Obama administration to beef up its climate plan by targeting methane leaks in the web of valves, pipes and pumps drillers use to produce and deliver natural gas. While companies have a vested interest in keeping methane bottled up on its way to customers, some gas inevitably seeps out. Thats worrisome because methane -- the primary component of gas -- is 25 times more potent than carbon at trapping heat. The administration has embraced gas as a cleaner alternative...