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Scientists investigate the possibility that alien life-forms influenced human evolution, citing the existence of strange monuments around the world to support their theory.
- Status
- Released
- Production
- National Geographic
Keywords
- alien
- alien race
- nature documentary
Links
Top Cast
Ian Gregory as Narrator - Himself
Top Crew
Nancy Donnelly · Writer
Nancy Donnelly · Producer
Vicky Matthews · Producer
Eleanor Grant · Executive Producer
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