I am a physicist with a focus on cognitive science, system dynamics, and the application of sustainability science. My research career spans some 45 years, and includes experience in astronomy and astrophysics, management, operations research, mathematics education, and applied system dynamics. I have held research and teaching positions at Yale University, Kitt Peak National Observatory (Arizona), and the Australian National University. For the last 20 years I have worked on the development of practical approaches to integrative research and adaptation in complex human-environment systems. This work, which revolves around a blend of concepts from complexity science, system dynamics, and cognitive science, has been carried out in collaboration with community, student, academic, industrial and professional groups. Over the last 10 years I have focused on the feedback interactions between urban design and human health and wellbeing. I have recently been appointed Visiting Research Fellow at the United Nations University, International Institute for Global Health, Kuala Lumpur.