Uploaded August 2025 | Updated September 2026, 3 weeks ago

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Discover how London is building a multi-billion pound super sewer to meet the demands of its nine million residents. This extraordinary feat of engineering navigates the city's subterranean tangle, creating a vital new artery for wastewater.

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Impossible Engineering looks at the history of pioneering modern-day mega structures. Behind every seemingly impossible marvel of modern engineering is a cast of historic trailblazers who designed new building techniques, took risks on untested materials and revolutionized their field.

This film was first broadcast: 2020

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Discover the best science, technology, and engineering shows. Explore amazing experiments, groundbreaking inventions, and the secrets behind incredible builds. Ignite your curiosity!

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#science #technology #engineering