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From revolvers to smiley faces to Ouija Boards, discover the fascinating origins of some of history's million-dollar inventions.
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How the electric chair, the Ouija board, and other chilling ideas became million-dollar inventions.
See how the TV, speed camera, photocopier, and space telescope went from sketch drawings to life-altering inventions.
See how crime made lucrative inventions out of the house alarm, the cash register, the Tommy Gun, and even the toothbrush.
Would you inhale toxins, leap off a cliff, or shoot yourself to prove you're right? Meet four inventors who did just that.
How did a waffle iron change the world of running shoes forever? Find out this and other invention secrets.
The story of the gun meant to end violence, the box that keeps hearts beating, and the printer that can build anything.
They walked through fires, faced poverty, ran for their lives, and found their fortune in gold, guns and games.
Witness the tragic and triumphant stories of little guys with big inventions and their fight to bring them to the world.
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