8/10. Books on natural history and the nature of history are this week's choice from Sue MacGregor and her guests, novelist Philippa Gregory and environmentalist Jonathan Porritt. MacGregor's choice is Gilbert White 's The Natural History of Selborne, Gregory picks Edith Wharton 's Glimpses of the Moon and Porritt brings along
Bruce Chatwin 's The Songlines. Producer Tim Dee RptdonFridayatHpm