William Rees is an ecologist, ecological economist, Professor Emeritus and former Director of the University of British Columbia’s School of Community and Regional Planning. He is the originator and co-developer (with his former student, Dr Mathis Wackernagel) of ‘ecological footprint analysis’ and author of 150 peer-reviewed papers and book chapters, and numerous popular articles, on humanity’s (un)sustainability conundrum. Dr Rees work is recognized worldwide. The Vancouver Sun named Prof Rees one of British Columbia’s top public intellectuals in 2000. He was elected to the Royal Society of Canada in 2006 and has since been awarded an Honorary Doctorate (Laval University), a Trudeau Foundation Fellowship, the 2012 Boulding Prize in Ecological Economics and a 2012 Blue Planet Prize (jointly with Dr Wackernagel) , and is a Fellow of the Post Carbon Institute.