Tractors, Cow Bells, Street Lights

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How Do They Do It?
11th July 2019 22 mins Season 16 Episode 9

How do they build a tractor every three minutes to power Indian agriculture? How do they cast the bronze bells that help Swiss farmers keep track of their cows?

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Birds Nest Soup, Rowing Oars, Castanets still
Season 16 · Episode 10

Birds Nest Soup, Rowing Oars, Castanets

How do they collect millions of real birds' nests to make birds' nest soup? How do they use aerospace technology to make rowers go faster? And, how are castanets made?
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