Look up in New Mexico and on most days you’ll see the unmistakably vast blue skies that make the Southwest region so unique.But there’s also something hovering over the Four Corners region that a naked eye can’t detect: A 2,500-square mile cloud of methane, the highest concentration of the heat-trapping pollution anywhere in the United States. The Delaware-sized hot spot was first reported in a study by NASA scientists two years ago.

Of course, in Australia, we couldn’t possibly get this kind of fugitive emission leakage? Then again…