Season 30, Episode 6 Fortress of the Bears
First Aired: January 25, 2012
A look at life for brown bears on Alaska's Admiralty Island over the course of a year in which a La Niña winter cools the water to two degrees below normal and, thus, delays the annual salmon spawning run by two months. As a result, the bears are forced to survive on a mostly grass diet, which leads them to become gaunt and desperate.
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- Premiered: October 10, 1982
- Rating: TV-G
- Premise: PBS's signature (and multi-award-winning) natural-history series uses gifted wildlife documentarians and stunning photography to reveal what its first host, Donald Johanson, called `the magic and mystery of the fascinating natural world.' The series has ga… (more)