Rob Avis, P.Eng and Michelle Avis, P.Eng own and operate Adaptive Habitat, a leading edge property design firm for resilient homes, acreages, and farms and Verge Permaculture, a globally recognized award-winning education business. They have over 20 years of combined experience in project management, ecological design, and sustainable technologies, which they share at vergepermaculture.ca from their suburban house and yard that they've transformed into a model of cold climate urban permaculture in Calgary, Alberta. They are co-authors of the newly published Essential Rainwater Harvesting and as a popular lecturer, Rob has earned testimonials from permaculture’s bestselling author Toby Hemenway and farming superstar Joel Salatin among others. Leading designer/consultant Geoff Lawton describes Verge Permaculture as “one of North America’s premier permaculture design and education companies.”