Contributor(s): John Elkington | Drawing from his recent book The Zeronauts: Breaking the Sustainability Barrier, John Elkington will provide an account of his personal journey over 40 years on “the sustainability frontier” and his proposals on how to meet global challenges. John Elkington is co-founder and executive chairman of Volans. He is also the co-founder of SustainAbility, where he remains today as a a non-executive member of the board. Dr Mason is a senior lecturer in the department of Geography and Environment and an associate of the Grantham Research Institute for Climate Change and the Environment.