Bill Gates is one of those people for whom "needs no introduction" is actually true. The polymathic Microsoft founder now leads the world's largest and most important private foundation, and he's predicting that we're on the cusp of the energy breakthrough that's going to save the world. He also talks about the controversial idea that technological innovation is slowing down, assesses how close we are to true artificial intelligence, and explains why you really want to save being sick for 20 years from now.  Learn more about your ad choices. Visit podcastchoices.com/adchoices