Major methane release is almost inevitable - environment - 21 February 2013 - New Scientist: "The Siberian permafrost is a particular danger. A large region called the Yedoma could undergo runaway decomposition once it starts to melt, because microbes in the soil would eat the carbon and produce heat, melting more soil and releasing ever more greenhouse gases. In short, the melting of Yedoma is a tipping point: once it starts, there may be no stopping it."
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