Referencing biology, history, memoir, medicine and forensics, Lawrence Hill’s Blood: The Stuff of Life is a meditation on a substance that both unites and divides us. Dr. Sharad Paul’s Skin: A Biography delves into the way we think about skin and skin colour. The pair discuss questions of biology, identity, connection and separation with microbiologist and 2013 Science Communicator of the Year, Siouxsie Wiles.