Scientists investigate the possibility that alien life-forms influenced human evolution, citing the existence of strange monuments around the world to support their theory.
Narrator - Himself
1986-11-03
01987-11-30
02004-01-01
02007-01-01
02020-02-12
01993-01-01
01999-01-10
01985-06-23
02023-03-18
01996-09-27
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