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Inside the Fortress
1m 17s
Admiralty Island hosts the largest concentration of brown bears in the world.
NATURE brings the beauty and wonder of the natural world into your home, becoming in the process the benchmark for natural history programs.
Video description: Witness Sir David’s love of fossils as a young boy in Leicester transform into a passion for the natural world in his field of study at Cambridge. From his early days as a presenter on BBC’s Zoo Quest, Attenborough rose through the ranks to become the foremost natural history presenter in the world.