PhD, UC Berkeley. Professor and Dean, School of Design and Environment, NUS. Research in sustainable cities, urban design, heritage and history of Chinese cities. Visiting Professor, universities in China, Korea and Japan. Board Member: Jurong Town Corporation, Singapore; Centre for Liveable Cities; Building and Construction Authority. Author: On Asian Streets and Public Space (2010); A Digital Reconstruction of Tang Chang'an (2006); Cities of Aristocrats and Bureaucrats (1999).