MINNEAPOLIS (WCCO)-- NASA released an infrared animation Thursday of the polar vortex that put Minnesota and much of the upper Midwest in a historic deep freeze this week -- and it looks as insidious ...

As you might have noticed, it was unusually cold last week. The animation above depicts the weather system’s bone-chilling journey across the country as the spinning expanse of Arctic air known as the ...

Polar vortex. It's a phrase that becomes very popular has achieved buzzword status and is often used frequently during the winter as the Northern Hemisphere endures its coldest months of the year, but ...