The US is suffering through a polar vortex. Paradoxically, we may have global warming to thank for that.

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• The US is in the midst of a polar-vortex event. About 84 million Americans are experiencing subzero temperatures.
• The polar vortex is an area of circulating cold air that rings the planet's North Pole. Sometimes that vortex destabilizes, sending surges of Arctic air south.
• Climate change — specifically melting Arctic ice — may impact how often countries in the Northern Hemisphere experience polar-vortex events and other extreme winter weather. Some research suggests these cold snaps might get more common. 

The 2019 polar-vortex event continues to sweep the country.

Between the US Midwest and East Coast, 84 million Americans are contending with subzero temperatures, CNN reports. Wind chill advisories have impacted 140 million people.

See the rest of the story at Business Insider

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See Also:

• The world's top cigarette company thinks a future of extreme weather could be good for its tobacco
• The polar vortex striking the US will cause temperatures to plummet up to 40 degrees colder than normal
• Scientists just drilled the deepest hole ever in western Antarctica, going 2 kilometers down through the ice to study how it's melting

SEE ALSO: A polar vortex is engulfing the US. Here's what that really means, and why these events might be getting more common.

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