Grace Ding is an Associate Professor at the University of Technology Sydney, Australia. She is passionately interested in sustainability and sustainable development, and has spent the last 25 years researching, writing and teaching on sustainability and environmental protection. She is a recognised authority on green building and the author of nearly 100 book chapters, journal articles and conference papers on various environmental topics. Goran Runeson is a retired renowned academic and is now an Adjunct Professor at several universities in Sydney, Australia. He began academic life as an economist after having worked in the construction industry for several years, but saw the opportunity to combine his interests and transferred into the built environment. His research and teaching have revolved around various aspects of building economics and investment evaluation. In a long career, he has published some 200 journal papers, books and book chapters.