Examiner: The head of a major natural gas trade organization said that human activity contributes to climate change and argued his industry provides a solution to the problem. "I think you've got both natural and man-made causes of. So yeah, I think man-made activity does contribute to that," Marty Durbin, the head of America's Natural Gas Alliance, told the Washington Examiner in an interview at his group's Washington headquarters. "But again, here's the best opportunity we have because we don't have to...