Workers, foreground, stand Wednesday, Oct. 11, 2023, in an area that features a life-sized representation, behind, of a device that will use magnets to create the conditions for fusion to happen, at Commonwealth Fusion Systems, in Devens, Mass. Commonwealth is trying to create fusion inside what's called a tokamak. Nuclear fusion, which would be a new source of carbon-free energy, melds two hydrogen atoms together to produce a helium atom and a lot of energy. (AP Photo/Steven Senne)
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