Arctic turning green as areas that have been frozen for tens of thousands of years begin to thaw

The Arctic is turning green as areas that have been frozen for tens of thousands of years are now thawing, warns new research. The study shows that shrubs are flourishing in the tundra and increasing the rate that layers of frozen ground - known as permafrost - are melting. Researchers found that the greenery traps snow and aids the thawing process. The team from Los Alamos National Laboratory, University of Alaska Fairbanks and Oak Ridge National Laboratory dug snow pits...

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