For episode 51 we are joined by former academic, now science writer Graham Farmelo, to chat about his wonderful biography of physicist Paul Dirac. The nature of the universe is something we like to chat about here on The Existential Files, and Dirac essentially discovered half of it, when he posited the existence of antimatter! Dirac was a very interesting chap, and it was great to pick Graham’s brains about a host of physics questions, and about Dirac too. You can learn about Graham’s book on Dirac, The Strangest Man, and his new book Churchill’s Bomb, at Graham’s website http://grahamfarmelo.com