Why is it so cold? Split in polar vortex brings historic deep freeze to US | The Independent | The Independent
Chicago's Freezing Fire - The Atlantic
The Defining Photo of Chicago's Frozen Week
Blame slow jet stream for US deep freeze | New Scientist
Pipe Freeze in Chicago: Who to Call & What to Do - Arco Plumbing
Polar Vortex 2014: Photos of a Chicago Deep Freeze — Colossal
Arctic invader puts much of Midwest in deep freeze - Los Angeles Times
Frost quakes: More weird weather in Chicago from the polar vortex
Chicago Nearing 30-Year Deep Freeze Record | US News | Sky News
Polar vortex blamed for at least eight deaths as deep freeze grips US Midwest
Chicago Rolls Out Safety Plan For Latest Deep Freeze – NBC Chicago
Individuals stay home during Chicago's deep freeze - Medill Reports Chicago
Brutal Cold Freezes Chicago Leaving Winter Scenes
Chicago emerges from 52-hour deep freeze; 'spring-like' thaw expected for weekend | Fox News
Video Shows Car Covered in Ice as Lake Michigan Waves Splash, Freeze – NBC Chicago
/cdn.vox-cdn.com/uploads/chorus_image/image/62956937/900955694.jpg.0.jpg "Chicago's wintry cold will keep these restaurants and bars closed - Eater Chicago")
Chicago's wintry cold will keep these restaurants and bars closed - Eater Chicago
Deep Freeze Grips Midwest With Record-Breaking Low Temperatures - Bloomberg
A Merciless Cold Lingers in the Midwest - The New York Times
Rivers in Chicago FREEZE as temperatures drop to -50C - while Australia swelters in record 47C heat - World News - Mirror Online
US Midwest deep freeze: Polar vortex weakens but temperatures in some parts continue to tumble
Polar Vortex 2014: Photos of a Chicago Deep Freeze — Colossal
The Defining Photo of Chicago's Frozen Week
As deep freeze grips US, Chicago will be colder than Antarctica this week | <span class="tnt-section-tag no-link">News</span> | WPSD Local 6
Polar vortex puts US Midwest in a deep freeze | Climate Crisis | Al Jazeera
