लेखक: David Waltner-Toews

David Waltner-Toews is a professor of epidemiology in the Department of Population Medicine at the University of Guelph. With James Kay, Michelle Boyle, and David Cressman, he cofounded the Network for Ecosystem Sustainability and Health. He was also founding president of Veterinarians without Borders/Vétérinaires sans Frontières-Canada.James J. Kay (1955-2004) was associate professor in environment and resource studies at the University of Waterloo, where he also held cross-appointments in systems design engineering and urban planning. Nina-Marie E. Lister is a registered professional planner and associate professor in urban and regional planning at Ryerson University in Toronto. David Waltner-Toews is a Professor in the Department of Population Medicine at the University of Guelph. He was trained both as a biologist and a veterinarian. He is the founder of the organization Veterinarians Without Borders.James J. Kay was Professor of Environment and Resource Studies at the University of Waterloo. He is internationally known for applying ideas from thermodynamics to ecological systems.Nina-Marie E. Lister is Associate Professor of Urban and Regional Planning at Ryerson Polytechnic University in Toronto.