Dr. Matthews has spent much of his career develop- ing tools and methods to help support and teach about decisions that span economic and environmental aspects of product life cycles. He led the development of Carnegie Mellon’s widely used Economic Input-Output Life Cycle Assessment model and recently published a freely available university course textbook on LCA (www.lcatextbook. com). He has served as chair of the Committee on Sustainable Systems and Technology with the Institute of Electrical and Electronic Engineers, member of the advisory board for the EPEAT Green Electronics Standard, and on the Executive Committee for the American Center for Life Cycle Assessment. He is a member of the US National Academies Board on Environmental Studies and Toxicology (BEST) and has served on several NAS study committees on energy and sustainability.