Space.com on MSNOpinion
How Earth's atmosphere and climate come together to create a polar vortex
To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...
(CNN) — High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway. Over the next 10 days, changes in the stratosphere will upend weather ...
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