Imagine it as a giant, icy whirlpool far above the Earth, keeping frigid Arctic air contained near the pole. But here’s where things get interesting: the polar vortex’s behavior is closely ...

A bitter blast of Arctic air and frigid wind-chill values that has arrived in the Northeast following a major winter storm could come with an unexpected twist. A natural phenomenon called frost quakes ...

Toasty isn't exactly how you will describe the bone-numbing coming days. "Multiple waves of arctic air continue to gather over northern Canada with eyes for the central and eastern United States ...

Imagine it like a children's spinning top. When the top is spinning fast and steady, all that icy air stays tightly locked around the arctic, keeping the freezing temperatures up north.