Marion Waller is passionate about cities and environmental issues. She works as an advisor to the Deputy Mayor of Paris in charge of urban planning and architecture and has been the lead advisor on several competitions that have promoted ecological architecture in Paris. She has published her first book in 2016, called “Natural artifacts” about ecological restoration and the ways of re-inhabiting nature. In her talk, Marion Waller points out why we need a building revolution and which new rules we should apply on architecture to bring nature to the city.