Kali broke hearts from the moment he came to the St. Louis Zoo's then-new Polar Bear Point as an 850-pound 2-year-old in 2015 ...

The Saint Louis Zoo announced Wednesday that they have exchanged one of their long-time resident polar bears for young polar ...

Czech cold-water swimmers have set a new world record for the largest polar bear dip. A total of 2,461 took part in the ...

Polar bear cubs are incredibly cute - and amazingly elusive. Their mothers dig dens under the snow in remote areas.

Kali arrived at the Saint Louis Zoo in 2015 after being orphaned in the wild. He was the original resident of Polar Bear ...

Scientists captured polar bear cubs emerging earlier from their dens, linking it to climate change and environmental shifts.

ST. LOUIS - The Saint Louis Zoo announced a significant change in its polar bear exhibit this week, bidding farewell to ...

The time lapse footage is the result of almost a decade of work monitoring the vulnerable predators' maternal behavior.

Polar swimmers in the Czech Republic set a new world record on Saturday for the largest 'polar bear dip', spending at least ...

Saint Louis Zoo trades Kali for twin polar bears from Toledo Zoo to enhance species diversity.

The remote cameras have captured the moment a mother pokes her head out from her den to see if the world is safe enough for her little ones.