Thứ Tư, 24 tháng 1, 2018

NPR News: Is There A Ticking Time Bomb Under The Arctic?

Is There A Ticking Time Bomb Under The Arctic?
Just what exactly is permafrost? And what is happening now that it's warming up? To find out, we enter the Arctic circle's secret world of ice and frozen history.

Read more on NPR
Environment
January 24, 2018 at 04:37PM

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