Season 32.
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.Origins: Earth is Born
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Episode 2.Origins: How Life Began
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Episode 3.Origins: Where Are the Aliens?
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Episode 4.Origins: Back to the Beginning
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Episode 5.The Most Dangerous Woman in America
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Episode 6.America's Stone Age Explorers
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Episode 7.Great Escape
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Episode 8.Ancient Refuge in the Holy Land
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Episode 9.Welcome to Mars
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Episode 10.The Boldest Hoax
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Episode 11.Supersonic Dream
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Episode 12.The Viking Deception
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Episode 13.Saving the National Treasures
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Episode 14.A Daring Flight
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Episode 15.
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Episode 17.Newton's Dark Secrets
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Episode 18.Storm That Drowned a City