S15 · E06
Parchment, Shuttlecocks, Salt
How did the ancient Greeks invent parchment with techniques still used today? And how do they make shuttlecocks, the fasting moving object in sport?

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S15 · E06
How did the ancient Greeks invent parchment with techniques still used today? And how do they make shuttlecocks, the fasting moving object in sport?

S15 · E05
Oct 23, 2017 · 22m