What is the polar vortex? It’s a wintertime mainstay capable of flooding Canada with some of the world’s coldest air It’s a pattern responsible for holding back the coldest temperatures on the planet.

Here in the lower Great Lakes Region, we are well-equipped to handle blasts of cold and snow. It’s when the polar vortex sends arctic air into areas that don’t usually receive it that it can become ...

A sudden, dramatic shift in temperatures high in the atmosphere will dance with the La Niña weather pattern. There won't be a ...

The polar vortex can't be felt in the United States or anywhere on Earth. Brutally cold temperatures are heading to the Midwest and Northeast this week -- but don't mistake this for a polar vortex ...

A high-pressure system in the Arctic could push frigid air south starting in mid-December, raising hopes for a white ...

The coldest temperatures of the year are expected for much of Ontario on Monday and Tuesday. Frigid Arctic air is being pushed south thanks to the polar vortex. A.M. Headlines Newsletter ...

Bitter cold is expected across much of the U.S. this weekend. But what do headlines mean when they say a "polar vortex cold snap" is on the way? The polar vortex is a regular feature of Earth's polar ...

Polar habitats are often cold, windy and covered in frozen snow and ice. At the top of the Earth is the North Pole, and at the bottom of the Earth is the South Pole. We are here. But have you ever ...

News last week that Environment Canada officials have contracted to a Quebec firm to estimate the value of a polar bear has brought out passionate responses as expected. (I wondered what kind of ...