Over the past 20 years, a wide range of economic, social and ecological benefits have resulted from integrating agriculture and architecture into new and existing building projects. This is a quick review of eight main benefits of these projects with examples from North America and around the world.

Rooftop farming is still very much in its infancy, yet these farms are already making a unique and multifaceted contribution to the communities they serve. Three outstanding urban farmers from different regions reflect on the social aspects of what they do, in this special 20th Anniversary Edition of On the Roof With…