US scientists have achieved a major breakthrough in the pursuit of clean, limitless energy. In an experiment conducted by the US government, physicists have for the first time achieved a net energy gain in a fusion reaction. The successful experiment marks a significant milestone in the quest to develop a zero-carbon energy source and could have far-reaching implications for the future of energy production. Fusion is the reaction that powers the sun and has been studied by physicists since the 1950s. Despite significant efforts, no group had been able to produce more energy than they put into the reaction, until now. The breakthrough was achieved by using a new type of fuel, a mixture of two different isotopes of hydrogen. This allowed the scientists to produce a reaction that generated more energy than was put in. The experiment is still in the early stages and more research is needed before it can be applied in a practical way. However, the scientists involved are optimistic about the potential of this new technology and believe it could revolutionize the way energy is generated. The successful experiment is a major step forward in the pursuit of clean, limitless energy and could have a profound impact on the future of energy production.