Polar vortex' makes 187 million in US shiver
Polar Vortex Causes Midwest States Of Emergency As Cold Pushes Farther South : NPR
Polar Vortex in a nutshell - The Statesman
Over 20 dead in US polar vortex, frostbite amputations feared
The polar vortex may be on its way | CNN
Weakened 'polar vortex' blamed for N. American chill
What is the polar vortex – and how is it linked to climate change? | US weather | The Guardian
When will the US feel the impact of the polar vortex? | kare11.com
What Is the Polar Vortex? | NOAA SciJinks – All About Weather
Polar vortex `just sort of evaporates' and U.S. Midwest warms up | in-cyprus.com
The 2013-2014 polar vortex adds data points to the books – Climate Change: Vital Signs of the Planet
What Is A Polar Vortex? Your Freezing Cold Questions Answered : NPR
US weather latest: USA death toll rises as polar vortex delivers snow and extreme cold | Weather | News | Express.co.uk
In pictures: Polar vortex strikes North America - BBC News
As polar vortex lingers, parts of U.S. set for record lows - Oman Observer
Polar vortex 2022: What is it and how does it affect winter weather
US polar vortex: extreme cold weather heads to east coast – live | US news | The Guardian
The U.S. is about to get a potent polar vortex blast | Mashable
The polar vortex is coming—and raising the odds for intense winter weather
Polar vortex set to plunge parts of US into deep freeze
