What is a Weir?
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How Sewers Work (feat. Fake Poop)
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How Different Spillway Gates Work
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You're Probably Wrong About Rainbows
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El genio de las pequeñas turbinas hidráulicas
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The Ancient City That Mastered Water
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Inside Africa's Food Forest Mega-Project
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Weirs | The COOL Engineering Behind Them 😎
13:38