Why Humans Like to Cry - Trimble, Michael (Emeritus Professor of Behavioural Neurology, Institute of Neurology, London)

Human beings are the only species to have evolved the trait of emotional crying. We even create music, fiction, film, and theatre - 'Tragedy' - to encourage crying. Michael Trimble looks at the physiology and evolution of this unique human behaviour, exploring its links with language, consciousness, empathy, and religious practices.