How frigid polar vortex blasts are connected to global warming
Polar vortex coming in November: Arctic blast to central, eastern U.S.
The U.S. is about to get a potent polar vortex blast | Mashable
Weakened 'polar vortex' blamed for N. American chill
/cdn.vox-cdn.com/uploads/chorus_asset/file/13721799/DyAV_wOWsAADCyF.jpg "The polar vortex, briefly explained - Vox")
The polar vortex, briefly explained - Vox
Polar vortex' hits northern USA - ABC News
Brief visit from polar vortex to bring record-challenging cold to Northeast
The polar vortex is coming—and raising the odds for intense winter weather
US weather latest: USA death toll rises as polar vortex delivers snow and extreme cold | Weather | News | Express.co.uk
What is the polar vortex – and how is it linked to climate change? | US weather | The Guardian
The polar vortex may be on its way | CNN
The 'polar vortex' may appear in the US in January
Polar vortex: Best photos of US 'big freeze' | The Independent | The Independent
As polar vortex lingers, parts of U.S. set for record lows - Oman Observer
The Polar Vortex is strengthening. Should we be concerned? – Weather News
Polar Vortex Arm Looks to Visit North America Next Week
The U.S. is about to get a potent polar vortex blast | Mashable
Polar vortex: Bitter cold wave could be on its way from the Arctic
In pictures: Polar vortex strikes North America - BBC News
The 2013-2014 polar vortex adds data points to the books – Climate Change: Vital Signs of the Planet
The polar vortex splits, sending frigid air howling into the U.S., Europe
Polar vortex' makes 187 million in US shiver
Deadly polar vortex grips North America - YouTube
