Frank Close on the nuclear age, physics' forgotten figures and writing for a general audience

In an episode recorded live at EA Festival, Simon and Rachel speak with the science writer Frank Close. Frank is emeritus professor of theoretical physics at the University of Oxford and is the only professional scientist to have won the Association of British Science Writers Prize on three occasions. His 22 books include "The Cosmic Onion", "Trinity" and "Elusive". Frank is also a fellow of the Royal Society and winner of their Michael Faraday Prize for excellence in science communication. We spoke to Frank about the challenges of writing about physics for a lay audience, his fascination with the history of nuclear weapons, and his latest book, "Destroyer of Worlds".