Countries around the world are pouring billions of dollars into France's revolutionary nuclear fusion reactor

Matthew Stuart and Jessica Orwig

The fusion reactor everyone is anticipating is currently under construction in France. It's called the International Thermonuclear Experimental Reactor (ITER) and could be the fusion reactor to lead a new era of clean energy. Fusing atoms together generates energy but it takes a tremendous amount of energy to make the fusion happen in the first place. Consequently, engineers have failed to build a fusion machine that generates more energy than it consumes, but ITER is the first machine designed to do just that. If it succeeds, it could change the world.

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