"Libertarians Sue White House Over Climate Change Video"
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Jim Houston struggles to cross snow covered streets is in below zero temperatures Monday, Jan. 6, 2014, in Springfield, Ill. A whirlpool of frigid, dense air known as a “polar vortex” descended into much of the U.S. and plunged temperatures to record lows.
CREDIT: AP Photo/Seth Perlman
A libertarian think tank has sued the White House over a video that claimed global warming might be tied to last year’s extreme cold spell, commonly referred to as the “polar vortex. ”