Climatic Agents: Contemporary Challenges - urbanNext, March 24, 2020. - 294 words. Energy and sustainability, Essay, Laboratorio Permanente, Middle Density, OMA, Urban Paradigms Architecture&nature, Climate concern, Climate resilience, Competition, Contemporary urbanization, Designing Climate, Economy, Energy consumption, Environmental, Flexibility, Greenery, Italy, Landscape, Milan, Project, Sustainable infrastructure, Transformation, Urban planning The Agenti Climatici proposal for the redevelopment of two disused railway yards north and south of the periphery of Milan serves as the opportunity to discuss the contemporary challenges an urban project has to consider. ISSN: 2575-5374 Subjects--Index Terms: Architecture Reuse Milan, Italy Italy