By A Mystery Man Writer
Adopt a Polar Bear Symbolic Adoptions from WWF
What killed Knut? Riddle of beloved polar bear's death finally solved
Polar Bears as Patients: Caring for Animals at Henry Vilas Zoo - University of Wisconsin School of Veterinary Medicine
Polar bear - Wikipedia
Columbus Zoo and Aquarium welcomes back 23-year-old polar bear
What I Eat in a Day: Polar Bear Edition
Polar Bear Facts - North American Bear Center
Polar Bears - Bears (U.S. National Park Service)
Starved polar bear perished due to record sea-ice melt, says expert, Wildlife
Subpopulation of Greenland Polar Bears Found by NASA-Funded Study – Climate Change: Vital Signs of the Planet
Watch Polar Bear
Polar Bear, Species
Polar Bears Are Resorting To Cannibalism Due To Climate Change