Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

With over 170 million Americans facing below average temperatures, even colder air may be on the horizon thanks to the ...

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

This winter, the Northern Hemisphere is suffering from cold waves. In South Korea, an unusually prolonged cold wave has ...

The polar jet stream, which is affected by the polar vortex above it, has become quite wavy, allowing Arctic air to ...

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

Aircraft wake vortex dynamics encompass the study of the vortical patterns generated by an aircraft during flight, which have significant implications for aviation safety and airport capacity. These ...

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here's what to know.