- University of Iowa student dies during polar vortex; 7 other deaths linked to wintry blastFox News
- 77 below zero? Polar vortex yields deadly cold as thousands endure power cuts, travel issues mount in MidwestAccuWeather.com
- A Merciless Cold Lingers in the MidwestThe New York Times
- Chicago Weather Forecast Calls For More Snow Thursday Before Temperatures RiseCBS Chicago
- How dangerous (and historic) is the Polar Vortex hitting the Midwest? | TheHillThe Hill
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