The term vortex is used to indicate that the air flows in a counterclockwise direction. Both polar vortexes are present ...

There is a sudden warming about to happen high up in the atmosphere. This warming usually affects the Polar Vortex.

According to the Severe Weather Europe website—an online resource of global weather forecasts—a mass of cold air, spurred by the polar vortex, has been forecast to move over Canada and the northern ...

At the edge of the Arctic in northern Canada, the annual migration of polar bears draws tourists, photographers, and ...

The polar vortex is a large area of low pressure, cold air around the Earth's poles that blows westward during the winter and eastward during the summer. A polar vortex collapse occurs when air in ...

The polar bears pass through Churchill, Manitoba, hoping to catch a ride out of the tiny town on Hudson Bay's sea ice. After a summer of fasting on land, the bears need to get back to their frozen ...

Despite the poor weather conditions it is not, however, the second coming of a polar vortex, a phrase the National Weather Service's Chicago office tweeted earlier this week to describe the ...

and growing new feathers for their return trip to the Arctic—and polar summer. Throughout, careful illustrations set the terns alongside a larger community of wildlife: the tiny fish on which ...