Tony Juniper is an independent sustainability and environment adviser, including as Special Advisor with the Prince's Charities International Sustainability Unit and as a Senior Associate with the University of Cambridge Program for Sustainability Leadership. He is a founder member of the Robertsbridge Group that advises international companies. He speaks and writes on many aspects of sustainability and is the author of several books, including the award winning Parrots of the World, Spix's Macaw and How Many Light Bulbs Does It Take To Change A Planet? He was a co-author of Harmony, with HRH The Prince of Wales and Ian Skelly. His new book, What has Nature ever done for us? will be published in January 2013. He began his career as an ornithologist, working with Birdlife International. From 1990 he worked at Friends of the Earth and was the organisation's executive director from 2003-2008 and was the Vice Chair of Friends of the Earth International from 2000-2008. www.tonyjuniper.

com, twitter:@tonyjuniper.com.