URBAM - UNIVERSIDAD EAFIT | Studio Leader : Juliana Quintero Marin Our work aims to build fair processes in emerging areas that are in constant dispute. These areas face a tension between economic and infrastructural development and the protection of natural resources and local communities. The basin of the Atrato River and the northern area of the Aburra River ？Rio Norte- are clear examples of this tension. The basin of the Atrato River, its communities (afro descendants and indigenous) have been affected by a logic of natural resources exploitation that have caused extreme poverty, abandonment and presence of armed illegal actors. This condition contrasts with its cultural and multi-ethnic richness related to the lush, tropical and biodiverse nature. The northern area of the Aburra River and its inhabitants have lived in constant dispute. Migrants from the rural areas, displaced by the armed conflict in Colombia, found in Rio Norte the opportunity to rebuild their lives and to have a place in the city. Margined in a metropolitan area like Medellin, they erected a self-built neighborhood in the middle of the adversity. Understanding these two conditions could contribute to the approach to the collective, not only as a concept that integrates actors and interests, but also as a notion that implies tensions and differences.