The physicist, BBC presenter and author on snowflakes, art v science and the time Paul McCartney quizzed him about one of Saturn’s moons The physicist, BBC presenter and author on snowflakes, art v science and the time Paul McCartney quizzed him about one of Saturn’s moons What is the inspiration behind your latest live show, Emergence? It came from a book that I’ve loved for years: The Six-Cornered Snowflake by Johannes Kepler. Kepler is most famous for his laws of planetary motion in and