TEDTalks

If you wanted to know what the perfect energy source is, says physicist Steven Cowley, it's "one that doesn't take up much space, has a virtually inexhaustible supply, is safe, doesn't put any carbon into the atmosphere, doesn't leave any long-lived radioactive waste: it's fusion. But there is a catch... Fusion is very hard to do. We've been trying for 50 years." In this TEDTalk, Cowley explains why fusion will work and details the projects that he and many others have devoted their lives to - racing the clock to create a replacement for the world's dwindling supply of fossil fuels.