Freeman Dyson of the Institute for Advanced Study in Princeton talks with EconTalk host Russ Roberts about science, his career, and the future. Dyson argues for the importance of what he calls heresy--challenging the scientific dogmas of the day. Dyson argues that our knowledge of climate science is incomplete and that too many scientists treat it as if it were totally understood. He reflects on his childhood and earlier work, particularly in the area of space travel. And he says that biology is the science today with the most exciting developments.