Philip Dodd casts an irreverent eye over the reputations of two figures who loom large in the 20th century -- the painter L S Lowry and the historian of science, Thomas Kuhn. He's joined by the Booker Prize winner and Lowry fan, Howard Jacobson and the art critic, James Malpas and the philosopher and Kuhnian, Rupert Read and the science writer, Gabrielle Walker. Also Amanda Hopkinson and Geoff Dyer will be discussing Voyeurism and New Generation Thinker Martin Goodman reflects on the way scientists have grappled with the notion of bad air.