Ken Yeang is principal of the UK firm of Llewelyn Davies Yeang (and its sister company in Asia, T .R. Hamzah & Yeang Sdn. Bhd.), specializing in environmental design concepts for ecologically responsive large buildings and sites. He pioneered the passive low-energy design of bioclimatic skyscrapers and is author of Eco Skyscrapers.
Fred Kent is Founder and President of Project for Public Spaces, a New York City-based non-profit organization that advocates the creative and thoughtful use of public spaces in cities. Each year he and his staff train 10,000 people in Placemaking techniques. He is one of the foremost thinkers in livability, smart growth, and the future of the city.