Better Angels With Sarah Brown

Sarah Brown chats to Graça Machel, Kailash Satyarthi, and Larry Summers. Hear about the special people who've inspired others to do good. Featuring Nobel Prize winner Kailash Satyarthi, world-renowned economist Larry Summers and the former First Lady of South Africa and widow of Nelson Mandela, Graça Machel.  Short extract from a Wangari Mathaai speech, courtesy of Botanic Gardens Conservation International.