Dr. Doug McKenzie-Mohr is an environmental psychologist who specializes in designing programs to promote sustainable behavior. For the last decade his award-winning work has focused on incorporating scientific knowledge on behavior change into the design and delivery of community programs. As the founder of community-based social marketing, he has repeatedly illustrated its utility in his research, workshops, and consulting. His previous version of this book published through Canada's National Round Table on the Environment and the Economy has become requisite reading for those who deliver programs to promote sustainable behavior.