At least 10 people have died. Officials warned that arctic cold will persist for another day, and roads could remain ...

“Climate change has increased the disruptions to the polar vortex,” said Judah Cohen, an author of the study and an atmospheric scientist at Atmospheric Environmental Research, a consulting firm that ...

The polar vortex has shifted, spilling cold air across the U.S. with below freezing temperatures and subzero wind chills. The polar vortex is a ring of cold air that typically circles the Arctic.