San Diego Union-Tribune: Methane is a democratic molecule. You make it, I make it, cows and coal mines emit it. So do termites and multinational oil companies. When NASA looks for life on other planets, they dont look for little green men, they scan for methane. Methane is the ultimate sign of life though a massively mysterious, and invisible, one. The mysteries surrounding methane remind us that we barely know our own planet. For as long as weve had an oil and gas industry, weve had methane leaks from pipelines,...