It’s been seven decades ever since scientists started working on nuclear fusion technology, with the allure of almost limitless clean energy proving too powerful to resist. Unfortunately, milestones have fallen time and again, giving rise to the running joke that a practical nuclear fusion power plant could be decades, if not centuries, away. For nearly two decades, the world’s hopes of building a practical nuclear fusion plant have rested on France-based International Thermonuclear Experimental Reactor (ITER), funded and…