You can basically copy and paste that line into countless stories about today’s advanced reactor technology. While the US still has the most operational reactors in the world, China is catching up quickly. It generates just two megawatts of heat—less than the research reactor on MIT’s campus, which rings in at six megawatts. (To be fair, MIT’s is one of the largest university research reactors in the US, but still … it’s small.) Regardless, progress is progress for thorium reactors, as the world has been entirely focused on uranium for the last 50 years or so.