Or... Melting Arctic/Siberian sea ice may release methane into the air, a greenhouse has several times more potent than carbon dioxide. https://insideclimatene

Or... Melting Arctic/Siberian sea ice may release methane into the air, a greenhouse has several times more potent than carbon dioxide. https://insideclimatenews.org/news/18072017/arctic-permafrost-melting-methane-emissions-geologic-sources-study https://insideclimatenews.org/news/18072017/arctic-permafros...