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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<p>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.</p><p> </p> Learn more about your ad-choices at <a href="https://www.iheartpodcastnetwork.com">https://www.iheartpodcastnetwork.com</a>

From agriculture to the X-ray machine, Stuff to Blow Your Mind hosts Robert Lamb and Joe McCormick explore the inventions we created, and how they created us.

Invention

The Pencil

https://api.omny.fm/orgs/e73c998e-6e60-432f-8610-ae210140c5b1/clips/2f71f7ff-bac2-43f4-b7d5-ae320071ba31/transcript

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