Scientists capture rare footage of baby polar bears emerging from their dens, offering a powerful tool to look at the early lives of these elusive animals. Learn more: https://scim.ag/4bjOEQC #ScienceMagArchives | Science

Polar vortex expected to hit Massachusetts next week. Here's latest temperature forecast

What you need to know about the polar vortex

A polar vortex is set to grip much of the U.S. What does that mean?

A polar vortex is bringing winter-like temperatures and even some flurries to parts of the country. Meteorologist Lonnie Quinn is tracking how long the bitter cold will last. | CBS Evening News