Overview
Horizon looks at archaeologist's new theories surrounding the population of the New World over 11,000 years ago
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28 - 1Sudden Death January 07, 1991 -
28 - 2Keen as Mustard January 14, 1991
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28 - 3Smokers Can Harm Your Health January 21, 1991
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28 - 4Coming In from the Cold January 28, 1991
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28 - 5Small Problems with the Mirror February 04, 1991
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28 - 6Two Weeks to Save the Earth February 10, 1991
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28 - 7California Dreaming February 11, 1991
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28 - 8The Day the Earth Melted February 25, 1991
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28 - 9The Curse of Karash February 25, 1991
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28 - 10Playing at Noah March 04, 1991
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28 - 11Cashing in on Paradise March 11, 1991
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28 - 12The Terracotta Time Machine March 18, 1991
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28 - 13Measuring the Roof of the World March 25, 1991
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28 - 14The First Americans April 15, 1991
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28 - 15Inside Chernobyl's Sarcophagus April 22, 1991
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28 - 16Colonising Cyberspace April 29, 1991
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28 - 17Emerging Viruses May 13, 1991
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28 - 18Camelford - A Bitter Aftertaste May 20, 1991
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28 - 19Of Big Bangs, Stick Men and Galactic Holes June 03, 1991
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28 - 20Food For Thought June 10, 1991
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28 - 21The Long Road to the West June 17, 1991
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28 - 22Half Hearted About Semi-Skimmed June 24, 1991
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28 - 23T-Rex Exposed July 01, 1991
