Time: One small spot in the U.S. Southwest is the surprising producer of the largest concentration of methane gas seen across the nation.
Levels of methane over the Four Corners region are more than triple the standard ground-based estimate of the greenhouse gas, reports a joint study of satellite data by scientists at NASA and the University of Michigan.
Methane is a heat-trapping gas whose increasing quantities in the atmosphere have fueled concerns about global climate change.
The methane "hotspot,'...