Christopher De Sousa, RPP, is a Professor in the School of Urban and Regional Planning at Ryerson University in Toronto, Canada. He received his BA in Environment and Resource Management, his M. Sc. in Planning, and his Ph. D. in Geography all from the University of Toronto. Professor De Sousa’s research activities focus on various aspects of brownfield redevelopment, urban environmental management, parks planning, and sustainability reporting in Canada and the United States. He is currently working on a multi-year research project examining brownfields redevelopment in Ontario funded by SSHRC. He is on the Board of Directors of the Canadian Brownfields Network, a Steering Committee Member on the US Agency for Toxic Substances and Disease Registry (ATSDR) Brownfields/Land Reuse Health Initiative, and on the Advisory/Executive Committees for Ryerson’s City Building Institute and Center for Urban Research and Land Development.