Fusion power plants: where do things stand?

Mastering fusion would make it possible to reproduce the thermonuclear reactions of stars that are not at the end of their lives, where four hydrogen atoms fuse to form one helium atom. This is the physical process that generates the greatest amount of energy. Controlling it to produce electricity would be like putting the sun in a box. But is it really feasible on Earth? If so, when? And would such plants really be less dangerous in the event of an accident than fission power plants? Alessandro Casati, PhD in physics, spent four years working on various nuclear fusion projects: the major international ITER project in France and the Tokamak at EPFL in Switzerland. The specialist now works in finance, but has continued to follow advances in the field out of passion. A great advantage: he's able to give us impartial answers to our questions.