It weakens during the winter as the poles get more sunshine and strengthens during the winter as sun angle starts to shift ...

Knowing that polar bears are insatiably curious, Eirik set up his camera on the snow, within sight of the bear, hoping that 'the ground view and wide angle lens would give a totally different kind of ...

Following is a transcript of the video. The polar vortex is headed toward the US, expected to bring record-breaking cold to the Northeast, upper Midwest, and Great Lakes by this week. It's so cold ...