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(task) Arctic report card: Melting permafrost is transforming the region into a carbon source - The Washington Post

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Wed, 2019-12-11 07:39 — mdmcdonald


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climate change, carbon, threshold, mass extinction, permafrost melt

https://www.washingtonpost.com/

The Arctic may have crossed key threshold, emitting billions of tons of carbon into the air, in a long-dreaded climate feedback

Andrew Freedman


Permafrost, seen at the top of the cliff, melts into the Kolyma River outside Zyryanka, Russia, on July 4. Melting permafrost is altering Siberia's landscape and economy. (Michael Robinson Chavez/The Washington Post)

The Arctic is undergoing a profound, rapid and unmitigated shift into a new climate state, one that is greener, features far less ice and emits greenhouse gas emissions from melting permafrost, according to a major new federal assessment of the region released Tuesday.

The consequences of these climate shifts will...

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