“Recycling City - Lifecycles, Embodied Energy, Inclusion” is the book that collects the results of the Intensive Learning Programme held recently at the Iuav University (Venice, 29th june – 9th July 2012) and other contributions related to a research with the same title, in which IUAV research group is involved. Recycling cities is an essential strategy that cuts across the scales and themes of the contemporary urban question: the environmental crisis, the progressive divide between rich and poor, forced or denied mobility that points towards new exclusions. The goal of the research is the construction of a "100% recycling" scenario, exploring the potential, in terms of space and of architecture of the city, of a transformation that reuses and recycles the existing to the full. A “research by design” approach was chosen as the starting point of a reflection on techniques and forms of knowledge which use the project to tackle complex issues. A multidisciplinary approach has been proposed to deal with the economic and social implications of a territorial recycling process.