11 May '12, 11pm

NASA Discovers Yet Another Terrifying Global Warming Feedback Loop

NASA Discovers Yet Another Terrifying Global Warming Feedback Loop

As if the melting methane-packed permafrost and shrinking Arctic ice sheets weren't enough, NASA scientists have gone and uncovered a brand new feedback loop that could hasten climate catastrophe. Climate feedback loops, to the uninitiated, are phenomena that worsen the warming effect when triggered—which further worsens said phenomena, and around we go. The permafrost is probably the gnarliest: there's a truly stupendous amount of greenhouse gases trapped in the frozen tundras across Siberia, Alaska, Canada, etc. As the permafrost melts, it releases those gases into the atmosphere, which warms it up, and melts more permafrost. If warming keeps apace, permafrost could soon contribute 35% of worldwide greenhouse gas emissions . That's terrifying . So is this : "Researchers have known for years that large amounts of methane are frozen in Arctic tundra soils and in marine sed...

Full article: http://www.treehugger.com/climate-change/nasa-discovers-b...

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