It’s a theory that’s just as compelling as it is crazy: aliens invading Earth in ancient times to teach humans alien tech, leading to an explosion in human advancement! It sure sounds nice, but: is there any sound evidence for this popular pseudoscience?

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Welcome to COLOSSAL MYSTERIES, the show that explores life's most puzzling mysteries!

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Narrated by: Danny Tieger
Written & Directed by: Matt Levy
Edited & Animated by: Anton Makarau

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