polar vortex

Forecasters warn of a 'potentially catastrophic' US winter storm
The exact timing and path remain uncertain, but an arctic air mass from Canada is expected to clash with rain, creating a major winter storm.
Polar Vortex may have killed off majority of stink bugs, experts find
Wisconsin fire chief's beard freezes while fighting fire
Polar vortex: Iowa college student found dead on campus
What is a polar vortex?
Why is it about to get so cold in much of the country?
More Stories
Polar Vortex may have killed off majority of stink bugs, experts find
Wisconsin fire chief's beard freezes while fighting fire
Polar vortex: Iowa college student found dead on campus
What is a polar vortex?
Why is it about to get so cold in much of the country?