Season 2.
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.Why Do Birds Sing?
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Episode 2.How Much Do You Smell?
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Episode 3.The Hunting Of The Quark
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Episode 4.The Secrets Of Sleep
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Episode 5.Inside the Golden Gate
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Episode 6.The Men Who Painted Caves
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Episode 7.Red Sea Coral
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Episode 8.War From the Air
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Episode 9.What Time is Your Body?
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Episode 10.The Rise And Fall Of DDT
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Episode 11.Take the World From Another Point of View
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Episode 12.The Lysenko Affair
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Episode 13.The Tuaregs
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Episode 14.The Plutonium Connection
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Episode 15.The Other Way
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Episode 16.The Lost World Of The Maya
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Episode 17.