These photos show how cold it is in the US Midwest - KTAR.com
- These photos show how cold it is in the US Midwest KTAR.com
- Polar Vortex Live Updates: Extreme Cold Weather Grips Midwest The New York Times
- How cold is it in the polar vortex? Ask this toilet MarketWatch
- Residents keep going despite polar vortex cold snap: 'It's Chicago ... We don't let the weather stop us' Chicago Tribune
- 'Coldest air in a generation' hits the Midwest. Officials warn of almost instant frostbite wlfi.com
- View full coverage on Google News