DANIEL C. ESTY is the Hillhouse Professor at Yale University and Director of the Center for Business and the Environment at Yale (www.yale.edu/CBEY). Author or editor of nine books and dozens of articles, Dan is one of the world's leading corporate environmental strategy experts with twenty years of experience working with companies of all sizes and across many industries worldwide. He served as a senior official at the U.S. Environmental Protection Agency in the early 1990s and is presently Chairman of Esty Environmental Partners (www.EstyEP.com). ANDREW S. WINSTON advises some of the world's leading companies on how to profit from environmental thinking. He is also a highly respected and dynamic speaker, exploring the business benefits of going green with audiences around the world. Andrew's earlier career included corporate strategy at Boston Consulting Group and management positions in marketing and business development at Time Warner and MTV. See www.andrewwinston.com for more information.