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The return of nuclear fusion?

The world's biggest ever nuclear fusion reactor is about to begin construction in the hills of Provence. But with persistent doubts over fusion's capacity to generate energy efficiently and a raft of engineering conundrums, is this really money well spent?

By Fred Pearce   124

They call themselves “fusion gypsies”—scientists who have travelled the world, moving from one nuclear reactor to the next, living the dream that some day, somewhere, they can re-create the reactions that take place in the heart of the stars to generate huge amounts of cheap, clean electricity for the world.

Their goal is nuclear power, but not as we know it. This is fusion and not fission. Fission involves mining, processing and irradiating vast amounts of uranium, and leaving behind an even larger legacy of radioactive waste with half-lives stretching into the next ice age. Whereas, say the fusion gypsies,…

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