Is nostalgia for an idea of the NHS is inhibiting clear-eyed debate? Samira Ahmed is joined by columnist Ian Birrell and campaigning GP Jonathon Tomlinson to discuss. Alexandra Harris reviews an exhibition of Paul Nash's work at the Pallant House Gallery. Geneticist and writer Adam Rutherford discusses his latest exploration of the origin and future of life. And the television commissioner and producer John Yorke, whose work includes Life on Mars, Shameless and EastEnders, explores television and storytelling.