News tagged with arctic circle

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Noctilucent clouds get an early start

Every summer, something strange and wonderful happens high above the north pole. Ice crystals begin to cling to the smoky remains of meteors, forming electric-blue clouds with tendrils that ripple hypnotically ...

Jun 10, 2013 5 / 5 (2) 0 | with audio podcast

Thawing tundra a new climate threat

(PhysOrg.com) -- A significant source of greenhouse gases has started leaking into the Earth's atmosphere from an unlikely place. Above the Arctic Circle, land frozen for tens of thousands of years has begun ...

Jan 20, 2012 4.2 / 5 (15) 11