Why Are These Alaska Lakes Releasing Methane Bubbles?

August 30, 2016 - As the atmosphere warms up, carbon dioxide isn’t the only greenhouse gas we need to worry about. Methane is bubbling up from permafrost thawing beneath Alaska’s lakes, and it’s a more potent greenhouse gas than carbon dioxide. To estimate how much methane is being released into our atmosphere, scientists combine on-the-ground measurements and satellite data.