Humanity's ever-growing need for energy has led to a world that is dramatically changing, ravaged by extreme weather events. The way we get power has to change. Our question in this episode is about a potential new approach. Can we master nuclear fusion and achieve unlimited energy? Our host Dr Alfredo Carpineti talks to Dr Elise Delchambre of the International Thermonuclear Experimental Reactor (ITER) in France – the world's largest fusion experiment – about nuclear fusion, the many challenges ahead, and how it might change the world.