The 2015 Wilkins-Bernal-Medawar Lecture was this year presented by Professor Hasok Chang, Hans Rausing professor of History and Philosophy of Science at the University of Cambridge. He looks at how we can learn from the radically different ways in which scientists have made sense of the universe over the ages. Filmed: 6.30pm - 7.30pm on Tuesday 10 May 2016 at The Royal Society, London. royalsociety.org/events/2016/05/wilkins-bernal-medawar-lecture-prof-hasok-chang/