17 Season
287 Episode
How Do They Do It? - Season 9 Episode 8 Suspension Bridge, Crossbows
How do they make steel cables strong enough to hold up a 50,000 tonne bridge; why do modern hunters use medieval weapons; and how do shops know which clothes sizes...
- Year: 2021
- Country: Canada, Singapore, United Kingdom, United States of America
- Genre: Documentary
- Studio: Discovery
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