Bruce Greyson is a Professor Emeritus of Psychiatry and Neuro-behavioral Sciences at the University of Virginia, who has studied near-death experiences for more than 45 years and is one of the world’s leading experts on their science and significance. He is the author of After: A Doctor Explores What Near-Death Experiences Reveal about Life and Beyond, co-author of Irreducible Mind and co-editor of The Handbook of Near-Death Experiences. We talk about his research on near-death experiences, science defying survivor testimonies, the prospect of the afterlife and scepticism.