Industrial giants such as Britain’s Rolls-Royce are jumping into the action while GE Hitachi is building an SMR plant in Canada. And last month Britain launched an international competition for the best SMR design, pledging to take “up to a quarter of the UK’s electricity from homegrown nuclear energy by 2050?. The dirty truth is that we urgently need to experiment with all the clean energy ideas we can find, given climate change. There are three factors sparking this. One is a recognition that demand for electricity will soar in coming years, because of global growth and the fact that...