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.