It’s easy to take the pencil for granted, but that eraser-capped wooden cylinder with a core of graphite has a story and a history -- and Robert and Joe explore it in this episode of Invention.
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Invention Classic: Chewing Gum
Invention Classic: The Museum
Invention Classic: Sun Glasses
Invention Classic: Penicillin
Invented Words, Part 2
Invented Words, Part 1
Invention: Barbed Wire
The Fire Extinguisher, Part 2
The Fire Extinguisher, Part 1
Strike the Match, Part 3
Strike the Match, Part 2
Strike the Match, Part 1
Beachbum Berry on the Invention of the Mai Tai
Invention Classic: Chopsticks
Listener Mail: Year End Wrap-Up, Part 2
Listener Mail: Year End Wrap-Up, Part 1
Toys, Part 3
Toys, Part 2
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