A Closer Look at the Polar Vortex’s Dangerously Cold Winds http://bit.ly/2FUyf9q By YULIYA PARSHINA-KOTTAS, KARTHIK PATANJALI, JEREMY WHITE, BENJAMIN WILHELM and EVAN GROTHJAN from NYT Science https://nyti.ms/2B9tBka from Blogger http://bit.ly/2DIMdJ6 from Tumblr http://bit.ly/2HHzz19

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