May 4, 2016
A machine to save the world
They said it couldn't be done: Nuclear fusion. We visit scientists building a clean power plant that's hotter than the sun — but can they ever deliver? Then: the strange world of cold fusion, the people who hate it and the billionaires betting on it.
This photo taken 28 July 2004 in Cadarache shows a technician checking a plasma heating system inside a chamber of the Tore Supra nuclear reactor.
BORIS HORVAT/AFP/Getty Images
They said it couldn’t be done: Nuclear fusion. We visit scientists building a clean power plant that’s hotter than the sun — but can they ever deliver? Then: the strange world of cold fusion, the people who hate it and the billionaires betting on it.
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