Amory Lovins is perhaps the most encyclopedic yet agile-minded thinker of our time -- he knows an enormous amount of factual information but he doesn't let that get in the way of creative thinking. He is a consultant physicist and MacArthur Fellow leading the ongoing search for alternative solutions to energy problems. His groundbreaking contributions include the 'end-use/least-cost' redefinition of the energy problem in economic terms and the invention of a 'nega-watts' commodities market for the conservation of energy. He co-founded The Rocky Mountain Institute, a non-profit resource policy center that promotes resource efficiency and global security, with his wife and colleague, Hunter.