Geoffrey Heal, Professor at Columbia Business School, is the author of eighteen books and over two hundred articles. He is a Member of the National Academy of Sciences, a Fellow of the Econometric Society, Past President of the Association of Environmental and Resource Economists, recipient of its prize for publications of enduring quality and a Life Fellow. Recent books include Nature and the Marketplace, Valuing the Future, When Principles Pay and Endangered Economies: How the Neglect of Nature Threatens our Prosperity. He was a Commissioner of the Pew Oceans Commission, was a coordinating lead author of the IPCC’s Fifth Assessment Report, and co-founded and Chairs the Board of the Coalition for Rainforest Nations. He has been a principal in two start-up companies.