In this episode of Talk Nerdy, Cara joins Astronomer Royal and Emeritus Professor of Astronomy and Cosmology, Lord Martin Rees, in his office at Cambridge University. They talk about his new book, “On the Future: Prospects of Humanity,” as well as his work as the co-founder of the Center for the Study of Existential Risk. They discuss the hazards of short-term decision-making and the great potential modern science and technology offers us to secure the future of planet Earth for generations to come.