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Witness the tragic and triumphant stories of little guys with big inventions and their fight to bring them to the world.
They walked through fires, faced poverty, ran for their lives, and found their fortune in gold, guns and games.
The story of the gun meant to end violence, the box that keeps hearts beating, and the printer that can build anything.
How did a waffle iron change the world of running shoes forever? Find out this and other invention secrets.