Arctic winds from a powerful polar vortex are sweeping ... Arctic air across parts of North America, can disrupt weather patterns. According to the Windy weather map, temperatures are currently ...

A map shared by Jeff Berardelli ... making sure not to leave their skin exposed. A polar vortex is a large area of low ...

The new Southeast Greenland population, shown as red dots, is located between 60 and 64 degrees north. The map at the right shows the 19 current polar bear subpopulations, with colored dots ...