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Polar bears under watch

By: chief on Dec. 15, 2011, 8:01 a.m.
biologist checks polar bear's blood sample

Photo: Karyn Rode/USFWS

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Field test

A United States [skipwords]Fish[/skipwords] & Wildlife Service biologist labels blood samples taken from a polar bear. In these videos, polar bear experts talk about what it's like to work with the animals and what they think needs to be done.