Season 7.
Season 1.Season 2.Season 3.Season 4.Season 5.Season 6.Season 7.Season 8.Season 9.Season 10.Season 11.Season 12.Season 13.Season 14.Season 15.Season 16.Season 17.Season 18.Season 19.Season 20.Season 21.Season 22.Season 23.Season 24.Season 25.Season 26.Season 27.Season 28.Season 29.Season 30.Season 31.Season 32.Season 33.Season 34.Season 35.Season 36.Season 37.Season 38.Season 39.Season 40.Season 41.Season 42.Season 43.Season 44.Season 45.Season 46.Season 47.Season 48.Season 49.Season 50.Season 51.
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Episode 1.The Elusive Illness
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Episode 2.A is for Atom, B is for Bomb
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Episode 3.Living Machines
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Episode 4.Portrait of a Killer
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Episode 5.Umealit: The Whale Hunters
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Episode 6.The Safety Factor
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Episode 7.A Mediterranean Prospect
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Episode 8.Mr. Ludwig's Tropical Dreamland
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Episode 9.The Pinks and the Blues
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Episode 10.The Cancer Detectives of Lin Xian
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Episode 11.The Sea Behind the Dunes
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Episode 12.Do We Really Need the Rockes?
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Episode 13.The Big IF
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Episode 14.Voyager: Jupiter & Beyond
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Episode 15.The Wizard Who Spat on the Floor
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Episode 16.The Water Crisis
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Episode 17.Moving Still
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Episode 18.A Touch of Sensitivity
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Episode 19.The Red Deer of Rhum
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Episode 20.