News from Polar vortex

Polar vortex collapse set to cause extreme winter weather across US

'Life-threatening cold' expected as polar vortex stretches across U.S. after deadly weekend flooding

Very cold weather is coming. US about to get 10th and chilliest polar vortex this winter

Polar vortex slams U.S. as snow lingers in the South

In the United States, “the polar vortex is unleashed with maximum ferocity”

Where will it snow in the US? See where the polar vortex is set to make an icy impact

Siberian air to make Trump swearing-in coldest in 40 years

Polar vortex set to freeze the U.S. as far as the Deep South

Calgary temperatures to drop drastically by the weekend

Manatees congregate in warm waters near power plants as US winter storms graze Florida

Satellite Images Show Polar Vortex Bringing Icy Chaos to US

What is a polar vortex, anyway?

Texas Declares State Emergency Over Polar Vortex

Science news this week: Polar vortices and volcanoes undersea