EnvironmentMelting of Greenland ice sheet could release methane 'fire ice' Seismic surveys and sediment cores suggest that dozens of deep pockmarks on the sea floor were created when Arctic methane stores were disrupted by climate change after the last glacial maximum – and scientists warn it could happen again 51¶¯Âþ
VideoThe surprising way plants can slow Arctic melt The Arctic is the fastest-warming place on Earth, leading to a greener tundra and thawing permafrost. But there is a surprising upside to more plants, at least in the short term Video