A quick guide to why the experts are saying this latest deep freeze isn't a reason to think we're safe from global warming.
Arctic air over Western Canada has sent temperatures plunging. What you need to know about the polar vortex
The weather outside is frightful thanks to climate change and the polar vortex
Polar vortex: How can it feel so cold while the planet is warming?
PDF) Climate Change and Tourism in English-Language Newspaper Publications
Polar Vortex's End Is Near, Forecasters Say, Promising A Strong Warmup : NPR
Dramatic warm-up happening in the Arctic and Nunavut
Polar Vortex: 2019 Winter Storm
What is a polar vortex? What to know about the weather phenomenon
Polar vortex: What is the 2019 polar vortex weather event and is global warming to blame? - CBS News
Polar Vortex's End Is Near, Forecasters Say, Promising A Strong Warmup : NPR
What Is the Polar Vortex?
The Polar Vortex Is Moving Away From Canada & A '30-Degree Temperature Rebound' Is Coming - Narcity
The Polar Vortex Canada 2019 And Climate Change - Chatelaine
RealClimate: Absence and Evidence
Polar vortex on the move: these areas in Canada are at risk for dangerous cold