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Caroline Weaver: Why the pencil is perfect

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Why are pencils shaped like hexagons, and how did they get their iconic yellow color? Pencil shop owner Caroline Weaver takes us inside the fascinating history of the pencil.

Prochain épisode
S2018E79 - Daniel Engber: How the progress bar keeps you sane

Épisodes (352)

Saison 2018

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