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

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

A collapse in the polar vortex is letting Artic air come here. What that means, and why it happens.

Vortex Biotech Holdings Limited has announced the opening of its advanced laboratory facilities at Manchester Science Park.

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

A strong polar vortex moved across North America not long ago. Temperatures around Niagara Falls plunged below −20°C, far ...

Have you ever seen a 'steamnado' before? The Texas winter storm caused one to appear over Lake Lewisville on Sunday.

A winter storm descending on the US is expected to deliver heavy snow and ice to more than 150 million people across roughly ...

The meteorologists said the polar vortex system is set up due north of Michigan over Canada's Hudson Bay. It's at least ...

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

The Vortex Optics AMG 1-10X 24 mm FFP riflescope is the shortest and lightest FFP 1-10X low-power variable optic made ...