Y Combinator And Mithril Invest In Helion, A Nuclear Fusion Startup | TechCrunchY Combinator And Mithril Invest In Helion, A Nuclear Fusion Startup Building a nuclear fusion reactor that can generate more energy than is put in to make it work is one of the biggest challenges facing engineers today. Like quantum computing, decades of research have mostly resulted in proofs of concept, not hardware that can be rolled out commercially. So it came as a surprise to hear that Y Com
