Frigid Arctic air can be pushed south thanks to the polar vortex, which triggers cold snaps with temperatures plunging to lows that can lead to extreme cold warnings in Ontario, and elsewhere. Get our ...

WASHINGTON (AP) — It might seem counterintuitive, but the dreaded polar vortex is bringing its icy grip to the Midwest thanks to a sudden blast of warm air in the Arctic. Get used to it. The polar ...

WASHINGTON (AP) — Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way that will send much of the United States a devastating dose of winter weather ...

In this video, we explain vectors and derivatives as essential math methods used in physics, showing how they describe motion, direction, and change. Clear explanations and examples help connect ...

Don't be fooled by the string of uneventful weather — the polar vortex is rebooting and will take another swing, or several, at the greater Philadelphia region, leading to a turbulent weather pattern ...