The Human Spark | Becoming Us | Wear Grandma's Teeth | PBS
3:35
Added: 2 years ago
From: PBS
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  • Alan was having fun but managed to slip in some important questions. I'm sure he was amused to hear that the some conclusions are actually "free interpretations."

    ContactKofi 2 years ago

  • thanks PBS !

    monkeypeopleofearth 2 years ago

  • How the heck did those stone age people manage to drill holes in the teeth? That's what I want to know.

    gilraen789 2 years ago

  • Rocks, my friend

    Th3N1nj4Xx 2 years ago

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