Kazuo Ishiguro’s haunting 2005 novel of the lives and loves of human clones became an equally haunting and unsettling film five years later. How should we imagine a world in which some people exist to provide body parts for others? In what ways is this our world?

Adam Rutherford is a geneticist and science communicator who has written and broadcast widely about genetic engineering and the human future. He is a regular host of BBC Radio 4’s Start the Week and President of the British Humanist Association.