Encyclopedia of Earth
Encyclopedia of Earth: Conservation Biology: Polar Bear
Information about the polar bear: physical characteristics, behavior, life cycle, distribution, threats to their survival, conservation efforts, etc. (Published Sept. 7, 2011)
PBS
Nh Pbs: Nature Works: Polar Bears
This site created by NatureWorks focuses on the Polar Bears. The content of this resource includes a look at this species' characteristics, range, habitat, diet, behavior and life cycle.