Cows put it out there. So do mines and landfills. On a molecular level, methane gas is elegantly simple, just four tiny hydrogen atoms surrounding a single carbon atom. Zoom out, however, and the picture is more complex, particularly when it comes to climate change. Methane, the main component in natural gas, is both a rich source of energy and a powerful greenhouse gas.
NOAA Hot on Methane’s Trail: Scientists ‘Sniff’ Around Frozen Ground