 Schumacher's Big Society  RaDIO 4, 8.00PM  Mellifluous environmentalist Jonathon Porritt presents this tour of the BBC archives in search of material on the late Ernst Friedrich "Fritz" Schumacher, a German economist whose ideas are said to have inspired David Cameron's "Big Society" drive. In a nutshell, Schumacher believed that man shouldn't become a slave to technology; that the world cannot rely on non-renewable energy; that large societies would function better if they were broken down into smaller, autonomous units; and, perhaps most famously, "that there is more to life than GDP". Porritt digs up all kinds of treasures, including a neverbefore-aired recording of one of Schumacher's public lectures and a clip that suggests Margaret Thatcher was, at least up to a point, a fan.  Political incorrectness abounds in Taboo be Doo (R4, 10.30am) - a documentary about some of the 20th century's more risqu? songs, presented by Terence Blacker and with pithy contributions from Dillie Keane, Kit Hesketh Harvey and Steve Knightley. Elsewhere, listeners wishing to transport themselves to a muddy field in Somerset are spoilt for choice, with Glastonbury coverage dominating BBC radio's musical output. To pick a handful: adam and Joe (BBC 6 Music, 10.00am) present their jovial brunch show live from the festival; Sean and Cerys (BBC 6 Music, 8.00pm) review the day's musical events; and Radio 2 in Concert sees Stuart Maconie and Steve Lamacq (R2, 10.00pm) present highlights of tonight's set from Coldplay.