Permafrost slowly exhales methane
Permafrost soils store vast quantities of organic matter that are vulnerable to decomposition under a warming climate. Recent research finds that methane release from thawing permafrost may outpace carbon dioxide as a major contributor to global warming over the next century.
Below the cold, wet surface of the Arctic tundra lays a vast store of organic carbon frozen in permafrost. Climate change is warming the Arctic twice as fast ...