Polar Vortex's Breathtaking Chill Freezes Millions
![](https://media.wnyc.org/i/800/0/l/85/1/460965279.jpg)
Commuters make a sub-zero trek to offices in the Loop on January 6, 2014 in Chicago, Illinois. Temperatures in the city dipped to -16 degree Fahrenheit this morning on the heals of a polar vortex.
( Scott Olson / Getty )
( Scott Olson / Getty )
Produced by Jillian Weinberger