Unique group of polar bears on the brink of extinction?

Name: Unique group of polar bears on the brink of extinction?
Uploaded: 2024-06-12T21:54:20
Duration: PT104.0S
Description: Researchers say prolonged ice-free periods are a major factor in limiting polar bears' food sources.

Researchers say prolonged ice-free periods are a major factor in limiting polar bears' food sources.