It’s really, really cold again – as the US shivers through at least the eighth blast of air from the Arctic this winter. Here ...

The polar dance that caused snow to fall across the South in January has been studied for decades, but scientists still hope ...

WASHINGTON (AP) — The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic ...

Miles above the Earth, two bands of fast-moving air – the polar jet stream and the stratospheric polar vortex – sometimes tango together to influence weather in the northern hemisphere.

"An Arctic air mass is expected to plunge into the Central U.S. this week, with high confidence for widespread, ...