Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

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

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

Niagara Falls turns into a frozen wonderland as a powerful polar vortex pushes temperatures below -20°C, freezing mist ...

A polar vortex has plunged Niagara Falls into extreme cold, freezing mist into ice. Scientists explain the phenomenon, ...

A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a Polar vortex actually is, and the dangers — like frostbite — such ...

CLEVELAND — The temperature outside was so cold that your fingers, toes, nose and cheeks felt like they were burning. A harsh Arctic cold wave brought record-breaking temperatures to the United States ...

"I don't think anyone's made this connection between the surface fluid pattern and the interior properties of these planets." ...