Intro

Nuclear fusion could one day change the world by producing energy at lower costs than we generate it now — without greenhouse gas emissions or long-term nuclear waste.

If we can get it to work.

People have been promising nuclear fusion as a new, clean source of power for decades without much tangible success. But lately, billions of dollars from venture capitalists and tech entrepreneurs have flowed into the field. Science correspondent Geoff Brumfiel shares his reporting on some of the companies racing towards what could be the world's first commercial fusion power plants.

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