What's Behind the 'Arctic Blast' Plunging into the U.S.?
Briefly

It will be a very impressive, certainly one of the most impressive Arctic outbreaks of this century anyway, says Judah Cohen, a climate scientist at the company Verisk Atmospheric and Environmental Research.
Kristina Dahl, a climate scientist at the Union of Concerned Scientists, who adds that upgrades in recent years should reduce the strain that frigid air places on the power grid during this event.
Read at www.scientificamerican.com
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