Sustainability in global cities: The technical and social compromise to face climate change in Paris

The sustainability is a major concern in all global cities but the economic attractiveness is always the major considered element in public policy. The social and environmental concerns might provoke the collapse of this economic concern. The sustainability has to be the approach to conciliate these three pillars. In this paper, we present two major issues; the first one is related to the infrastructure management and resilience considerations and the second one concerns the implementation of high rise buildings in the context of Greater Paris. These two examples allow to present our approach to integrate innovation in built environment issues to consider the specific issues of sustainability in global cities.