New nuclear reactors can create more fuel than they consume

Most nuclear plants work like a wood fire that leaves behind unusable ash, but a new breed of reactor acts more like a self-replenishing candle. While traditional plants only burn about one percent of the energy in uranium, the Natrium design uses fast-moving neutrons to transmute common uranium-238 into plutonium-239. This process actually creates 1.03 atoms of new fuel for every single atom it consumes, effectively unlocking a fuel source that could power civilization for thousands of years.