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Episode 1.Darwin's Darkest Hour
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Episode 2.Hubble's Amazing Rescue
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Episode 3.Riddles of the Sphinx
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Episode 4.Becoming Human: First Steps
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Episode 5.Extreme Cave Diving
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Episode 6.Becoming Human: Last Human Standing
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Episode 7.What Are Dreams?
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Episode 8.
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Episode 9.Mind Over Money
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Episode 10.Mt. St. Helens Back from the Dead
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Episode 11.Building the Great Cathedrals
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Episode 12.Emergency Mine Rescue
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Episode 13.Trapped in an Elevator
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Episode 14.The Pluto Files
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Episode 15.Hunting the Edge of Space: The Mystery of the Milky Way
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Episode 16.Hunting the Edge of Space: The Ever Expanding Universe
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Episode 17.Secrets Beneath the Ice
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Episode 18.Mt. St. Helens Back From the Dead