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Watch Inventions That Changed History Season 1 Episode 4 Online

  • 7/10
  • Subtitles: English

Lava Lamps, Mood Rings, Ouija Boards, Slinkies, Silly Putty, Merlin, Pez Dispensers -- Get ready to go back in invention history, unleash your inner child, summon your youthful spirit, and spring, bounce and bubble your way back to a simpler time.