Edward Stourton chairs a live debate in which Professor David Marsland defends his view that the mentally and morally unfit should be sterilised. Professor David Marsland is Emeritus Scholar of Sociology and Health Sciences at Brunel University, London and Professorial Research Fellow in Sociology at the University of Buckingham. He argues that the only way to prevent the abuse and neglect of children whose parents are incapable of looking after them is to stop them from being born in the first place. It should be open to police and social workers to recommend that drug addicts, alcoholics and the mentally disabled should be irreversibly sterilised - and the courts should be able to enforce this. Challenging his views will be three expert witnesses including a senior social worker, a drugs charity lawyer and a moral philosopher. Join in the debate by emailing [email protected] or text during the programme on 84844. Producer: Peter Everett.