Manfred Lenzen is Professor of Sustainability Research at Integrated Sustainability Analysis (ISA) in the School of Physics at the University of Sydney. Manfred has a PhD in Nuclear Physics and 15 years of experience in renewable energy technologies. He has undertaken extensive experimental research on passive solar architecture. He is an international leader in economic Input-Output Analysis and Life-Cycle Assessment, is Associate Editor for the Journal of Industrial Ecology, and is the Editor-in-Chief of the journal Economic Systems Research. He has contributed major methodological advances as well as numerous applications, in particular on embodied energy and greenhouse gas emissions.