Chewing gum is everywhere today, but where does it come from? What did we chew before Bubblicious? How does gum affect us? Robert and Joe explore in this episode of Invention. (Originally published 7/8/2019)
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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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