Are dams still worth it?

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

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