Winter hasn't even officially started, but parts of the country are already bracing for what could feel like the deep freeze ...

The Upper Midwest and Northern Plains have been hit by Canada's freezing temperatures. On Thursday, Dec. 4, wind chills ...

Another brutally cold weekend is on the way as a piece of the Polar vortex dips out of the Arctic Circle, sending frigid air ...

Arctic wind patterns create a sort of wall around the pole that prevents frigid air from trickling southward. That wall that ...

The first of three rounds of bitter air has arrived, threatening record lows in cities from the Midwest to the Northeast.

Cold temperatures are set to continue into the weekend, but New England will feel another icy blast of Arctic air Sunday ...

The United States is expecting another hit by the polar vortex starting this weekend. Here's what's expected in South ...

A polar vortex is a large, low-pressure system of cold air that typically resides near the Earth’s poles, surrounded by ...

Arctic air is set to sweep across the country this weekend, dropping temperatures below zero in parts of the upper Midwest ...

A strong polar vortex doesn't cause cold weather — it does the opposite. Here's what to know about polar vortices, how they ...

Thanks to the polar vortex, the first half of December will bring multiple waves of Arctic air to the U.S. Here's what to ...

The knots in your shoelaces are familiar, but can you imagine knots made from light, water, or from the structured fluids ...