Heriberto Cabezas is the Senior Science Advisor to the Sustainable Technology Division in the U.S. EPA’s Office of Research and Development (ORD). He also holds an academic appointment as Associate Professor in the Department of Computer Science and Systems Technology at the University of Pannonia in Hungary. At the U.S. EPA he is responsible for the oversight of the scientific research teams under the guidance of the division director. He is a former Acting Director (2008-2010) of the Sustainable Technology Division consisting of approximately 50 scientists, engineers, and support staff – some thirty five at the doctoral level. Dr. Cabezas organized and led as Chief (2000-2008) the Sustainable Environments Branch, a multidisciplinary research group of some seventeen scientists and engineers. At the University of Pannonia he is responsible for conducting research on sustainability science and Graph Theory (P-Graph specifically) for network design including manufacturing processes, supply chains, and product and services distribution. Dr. Cabezas has served as Chair of the Environmental Division of the American Institute of Chemical Engineers (AIChE) for 2006. He was a recipient of the 1998 U.S. EPA Science Achievement Award in Engineering, the 2007 Distinguished Alumni Achievement Award from the New Jersey Institute of Technology, the 2011 Research Excellence Award in Sustainable Engineering from the AIChE, the 2011 ORD Sustainability Award (team) at the U.S. EPA, and the 2013 Lawrence K. Cecil Award in Environmental Chemical Engineering from the AIChE. Dr. Cabezas holds a Ph.D. from the University of Florida (1985) in thermodynamics and statistical mechanics, a M.S. from the University of Florida (1981), and a B.S. (magna cum laude) from the New Jersey Institute of Technology (1980) all in chemical engineering. His publications include over seventy peer-reviewed articles. Dr. Cabezas is the co-founder of the Trans-Atlantic Research and Development Interchange on Sustainability (TARDIS), a think-tank type workshop series held on alternate years between Europe and the United States. He served as an Embassy Science Fellow at the U.S. Embassy, Zagreb, Croatia for March 2014. He is a Fellow of the AIChE, a member of the American Association for the Advancement of Science, and a Board Certified Member of the American Academy of Environmental Engineers and Scientists. Dr. Cabezas is a decorated U.S. Navy veteran of the Vietnam Conflict.