Researchers were surprised when they spotted an additional cub with this mother polar bear. Dave Sandford / Discover Churchill When female polar bear X33991 first emerged from her maternal den in ...

Winter started quickly across most of Canada! Will a classic Canadian winter pattern hold through January and February? After a very mild fall across most of Canada, many places experienced one of ...

It is now likely that the coldest period of sustained cold weather is behind us after gripping the Eastern U.S. for the first part of December. Warmer temperatures are expected for Christmas and into ...

"It's just nice to know that the bears are looking out for each other," said Evan Richardson, one of the researchers A mother polar bear in Northern Canada appears to have "adopted" a cub that is not ...

With climate change steadily dismantling the icy habitat essential to their existence, new research suggests polar bears are rapidly rewiring their own genetics in a bid to survive. The species is ...

New research reveals a link between rising temperatures and changes in polar bear DNA, which may be helping them adapt and survive in increasingly challenging environments. The study by scientists at ...

A disruptive polar vortex is set to usher in three successive waves of Arctic air across the central and eastern United States through mid-December, bringing dangerously low temperatures and the ...

A polar vortex system is expected to bring two or more cold waves to Florida this week. Temperatures in North Florida could drop into the upper 20s, with a chance of frost or freeze. Central and South ...

A map of the polar vortex that is bringing frigid temperatures to parts of the U.S. (AccuWeather) The first of three rounds of cold Arctic air from a shifting polar vortex has sent temperatures ...

A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a Polar vortex actually is, and the dangers — like frostbite — such ...

The polar vortex has broken, and severe temperatures are set to dominate most of the country in the coming days. Temperatures in the 10s are forecast for much of the Northeast, and subzero ...