Overview
In this episode, Horizon looks a the efforts of zoos to save animal species from extinction by breeding enough to ensure their survival in captivity
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8 - 1Wildlife - The Last Great Battle January 04, 1971 -
8 - 2Great Ormond Street January 18, 1971
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8 - 3A Bulldozer Through Heaven January 25, 1971
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8 - 4Rumors of War February 01, 1971
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8 - 5I'm Dependent - You're Addicted (I) February 15, 1971
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8 - 6Kuru - To Tremble with Fear February 22, 1971
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8 - 7Due to a Lack of Interest, Tomorrow Has Been Canceled March 08, 1971
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8 - 8What Kind of Doctor? March 15, 1971
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8 - 9A Nice Sort of Accident to Have March 22, 1971
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8 - 10The Wood April 05, 1971
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8 - 11The Measure of Man April 12, 1971
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8 - 12Three Score Years and Then? April 26, 1971
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8 - 13Darwin's Bulldog May 03, 1971
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8 - 14The Secret May 10, 1971
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8 - 15What Every Girl Should Know May 17, 1971
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8 - 16Tastes of Foods to Come May 24, 1971
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8 - 17Looking for a Happy Landing May 31, 1971
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8 - 18A Case of Depression June 07, 1971
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8 - 19The Total War Machine June 14, 1971
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8 - 20The Dinosaur Hunters June 21, 1971
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8 - 21Your Country Needs You? September 27, 1971
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8 - 22Rheumatism October 04, 1971
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8 - 23If at First You Don't Succeed... You Don't Succeed October 11, 1971
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8 - 24One Liverpool or Two? October 18, 1971
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8 - 25Rutherford / The Cavendish Today October 25, 1971
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8 - 26The Fierce People November 01, 1971
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8 - 27The Men Who Painted Caves November 15, 1971
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8 - 28The Crab Nebula November 22, 1971
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8 - 29Can Venice Survive? November 29, 1971
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8 - 30Willingly to School? December 06, 1971
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8 - 31The Periscope War December 20, 1971
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8 - 32Patently Absurd December 27, 1971
