San Diego Union-Tribune: Drill, baby, drill. That clarion call to develop energy here on U.S. soil rallied fervid support in the past year when substantial natural gas deposits were identified from Connecticut to Louisiana — anything but your typical drilling states. Since burning gas emits 23 percent less greenhouse gas than burning oil, finding new resources here at home targets two important priorities: climate change and energy independence. But it turns out drilling for gas may not be as clean as …