The product of an international collective of artists, architects and writers who create collaborative projects and publications, this third edition of "Surface Tension"'s "Supplement" series documents three years of artistic research, site-specific work and location-based practices in Curitiba, Brazil--providing an in-depth exploration of the city's economically marginal favela dwellers, who venture throughout the public spaces of Curitiba in search of recyclable materials. Documentation and texts elaborate on the cultural and political issues that come to light through various uses of public space. Originally developed as a collaborative installation between international and local artists--including Ken Ehrlich, Brandon LaBelle, Octávio Camargo and Guilherme Soares--exhibited at Curitiba's Ybakatu Gallery, this publication raises pertinent questions about the consequences of cross-cultural and site-specific collaboration and proffers an experimental approach toward political inquiry and intermedia practice.