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April 28, 2025 26 mins

Hydroelectricity is the world’s biggest source of renewable energy, and dams have long been a popular - if controversial - way to fast-track development and boost economies.

Jordan Dunbar is in Thailand, a country that has been transformed by hydropower. He meets Thais who've been helped by dams, and those they’ve hurt. And he finds out how a warming world could put the future of hydropower in jeopardy.

Presenter: Jordan Dunbar Producer: Ellie House Assistant Producer in Thailand: Maew Wilawan Watcharasakwej Sound design: Tom Brignell Production Coordinator: Brenda Brown Editor: Simon Watts

If you have a question, email us at theclimatequestion@bbc.com or leave a WhatsApp message at + 44 8000 321 721

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