We’re all probably using a lot more soap these days, but… what is it exactly? How does it work? Who invented it and how has it changed the world? Join Robert and Joe as they explore the invention of Soap. This episode marks the final installment of Invention as a standalone podcast, but invention-based episodes will continue on the Stuff to Blow Your Mind podcast.
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Walls
The Wheel, Part 2
The Wheel, Part 1
Roads
The Saxophone
The Death Ray, Part 2
The Death Ray, Part 1
The X-Ray
Sun Glasses
Toothpaste
Chopsticks
Guillotine
The Vending Machine
Trailer: Daedalus
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