Melting permafrost a new peril in global warming: U.N

Reuters: Permafrost lands across Siberia and Alaska that contain vast stores of carbon are beginning to thaw, bringing with it the threat of a big increase in global warming by 2100, a U.N. report said on Tuesday. A thaw of the vast areas of permanently frozen ground in Russia, Canada, China and the United States also threatens local homes, roads, railways and oil pipelines, the U.N. Environment Programme (UNEP) said in the report which was released at the U.N. climate talks being held this week and next......

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