Climate Central: As global warming heats the Arctic, carbon dioxide emissions from melting permafrost could play a bigger role in worsening climate change than previously thought, according to a new study.
Scientists have long considered methane emissions to be the biggest climate threat posed by thawing permafrost. Methane is more potent than carbon dioxide in the short term because as the gas is released into the atmosphere, it speeds global warming, leading to more thawing, more emissions and even more warming....