The polar vortex isn’t just about cold snaps — it’s part of a global system that’s starting to unravel. As Arctic temperatures rise, this once-stable force is breaking down. The result? Extreme ...

Churchill, Canada — On a cold November morning in the subarctic Canadian town of Churchill, Manitoba, Ian Van Nest sits in the warmth of his SUV and peers through binoculars at a pair of polar bears ...

Meteorologists are predicting colder-than-normal temperatures to hit a large portion of the United States, which will bring the first snowstorms of the year to many areas. Towns and cities in northern ...

Editor's Note: APYs listed in this article are up-to-date as of the time of publication. They may fluctuate (up or down) as the Fed rate changes. CNBC Select will update as changes are made public.

With the bitterly cold temperatures moving in it is good to know how and why this happens. The Polar Vortex is going to impact us this year but do you know what it is and how it works?