Environmental Grafts. Self-sufficient plug-in devices at CanAlier Warehouse, 22@ BCN. Institute for Advanced Architecture of Catalonia (IAAC) and Massachusetts Institute of Technology (MIT), Dept of Architecture meet in Barcelona for a 5days Intensive Workshop. Researchers will develop a catalog of constructive prototypes for urban retrofitting. Catalog will be applied to the Can Alier case study, an old 22@ abandoned factory. Prototypes will be based on previous environmental performative models research.