How Do They Do It? Season 15 Episode 5
It’s been tipping over for 800 years – what’s the gravity-defying magic behind Pisa’s leaning tower? And, how are chocolate digestive biscuits manufactured?
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Serie: How Do They Do It?
Episode Title: Pisa's Leaning Tower, Eider Down, Chocolate Digestive
Air Date: 2017-10-23
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