Richard Hyde is Professor of Architectural Science at the University of Sydney, Australia. He is a registered architect engaged in the field of sustainable architectural design and research for buildings. He is currently Associate Dean Research, Editor-in-Chief of Architectural Science Review and Coordinator of the Sustainable Design Program, Faculty of Architecture Design and Planning, the University of Sydney. Nathan Groenhout is a consultant providing ecologically sustainable design, thermal and energy modelling, and research and development in building innovation. He is currently Adjunct Associate Professor in the Faculty of Architecture Design and Planning at the University of Sydney, Australia. In January 2002, he was a Visiting Research Scholar at the Institute of Fluid Science, Tohoku University, Japan whilst completing his PhD in numerical and experimental investigations of advanced solar water heaters. Francis Barram is an author and energy analyst with extensive experience in the design of sustainable building services and industrial processes. He is a member of the Australian Standards Energy Audit Standard Committee and founder and Managing Director of Ensight, an award winning national consultancy. Ken Yeang is an architect, planner and ecologist. He is the Chairman and Design Director of Llewelyn Davies Yeang (UK) and principal of T. R. Hamzah & Yeang (Malaysia). He is the Distinguished Plym Professor at the University of Illinois, USA, and has received international awards for his architecture and masterplans.