CHAPTER AVAILABLE—Rio’s Favelas: The Power of Informal Urbanism March 1, 2019 Now available “Rio’s Favelas: The Power of Informal Urbanism” chapter by Catalytic Communities’ Theresa Williamson published in Perspecta 50: Urban Divides, edited by M. McAllister and M. Sabbagh of Yale University and published by MIT Press (July 2017). Download “Rio’s Favelas: The Power of Informal Urbanism” chapter here or click here to purchase the full book.