Methane plume over western U.S.

Photo: Richard Hamilton Smith/Corbis

A monstrous cloud of accumulated methane—a potent greenhouse gas—is now hovering over a large portion of the western United States according to satellite imagery analyzed by NASA and reported by the Washington Post. More at: http://www.theguardian.com/environment/2015/jan/04/leaking-methane-gas-plume-us