Science | Nation

Polar Vortex Blamed For Dangerously Cold Weather

NPR | Jan. 8, 2014 3:56 a.m.

A phenomenon called the Polar Vortex is spreading bitter cold weather over a large swath of the U.S. It’s one of the nation’s coldest periods in two decades. David Greene talks to Andrew Freedman, senior science writer for Climate Central, an independent non-profit organization researching and reporting on the science and impacts of climate change.

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