Steffen Lehmann, PhD, AA Dip, is a tenured Professor of Architecture and Director of the School of Architecture at the University of Nevada at Las Vegas, USA. Previously he was Professor of Sustainable Architecture at the University of Portsmouth, UK, where he was also Founding Director of the Cluster for Sustainable Cities. Over the last 30 years, he has lived and worked in different cities around the globe, in the UK, Europe, USA, Australia and Asia.