The Urbanist podcast

Reusing waste heat, The British Library’s solar project and India’s stepwells

4/10/2025
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What are some of the ways that heating the air and water in our buildings can be made greener? We consider innovative solutions from the capture and redistribution of a building’s warmth to a solar project in London that is decarbonising The British Library’s water-heating process. Plus: we visit one of India’s historic stepwells to see how the ancient structures could provide an answer to the country’s water-supply woes.

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