Following the critical success of Tristram Stuart’s first book, The Bloodless Revolution (2006), ‘a genuinely revelatory contribution to the history of human ideas’, Tristram Stuart has become a renowned campaigner, working in several countries to help improve the environmental and social impact of food production. His latest international prize-winning book, Waste: Uncovering the Global Food Scandal (Penguin, 2009), revealed that Western countries waste up to half of their food, and that tackling this problem is one of the simplest ways of reducing pressure on the environment and on global food supplies. In 2009, Tristram organised ‘Feeding the 5000’ (www.feeding5k.org) where 5000 members of the public were given a free lunch in London’s Trafalgar Square using only ingredients that otherwise would have been wasted. Replica events have since been held internationally and another is planned this year in London on November 18th. In 2011 Tristram won the international environmental award, The Sophie Prize, for his fight against food waste.