For millennia, lakes in Greenland’s dry tundra have locked up huge loads of carbon in their sediment. But as the Arctic becomes warmer and wetter, scientists believe these lakes could become sources of carbon, which would have important consequences for the world’s climate.
Over the past 20 years, Arctic lakes have shrunk or dried completely across the pan-Arctic, a region spanning the northern parts of Canada, Russia, Greenland, Scandinavia and Alaska.
