How controversies around defining death have impacted on organ donation.
Jonathan Miller explores the complex questions that arise from trying to define death.
He explores some of the difficult questions about exactly when the transition from life to death occurs.
Are we dead when our hearts stops or when our brain has died, and what does brain death mean? Jonathan considers how medical technology has changed the process of dying and how controversies around defining death based on the heart or the brain have had an impact on organ donation and transplantion.