Theoretical experiments around the concept of the “metabolic-city” place living organisms at the heart of a new paradigm, encouraging a systemic approach. In urban and architectural practice, what tools are available to measure metabolism? Pauline Detavernier, Doctor in Architecture and Research and Development Project Manager at PCA-STREAM, examines existing measures of the life cycle and urban metabolism to outline a methodology.
The Champs‑Élysées, History & Perspectives exhibition presents the study conducted between 2018 and 2020 at the behest of the Comité Champs‑Élysées by PCA-STREAM in collaboration with some fifty researchers, historians, scientists, engineers, artists, and economic and cultural actors from France and abroad. It traces the development of “the most beautiful avenue in the world,” analyzes its current usages, and proposes a vision of its potential evolutions in response to the challenges this area of the city faces in the present day. The Champs-Élysées is becoming a collective space to experiment with the development of a sustainable, desirable and inclusive city by 2030 through focusing on four main strategic priorities: reducing the impact of urban mobilities, rethinking nature as an ecosystem, seeking new uses, and the use of data for measurement and regulation.
Etienne Riot, urban planning researcher, and Pauline Detavernier, architecture researcher, are at the heart of applied research and innovation at PCA-STREAM. Together, they talk about the different facets of this research, from a CIFRE contract, to the setting up of a university chair project, to the subjects explored by the collaborators.
Périg Pitrou is an anthropologist, CNRS Research Director at the Maison Française d’Oxford and head of the “Anthropology of Life” team at the Collège de France. He is Scientific Director of the City-Metabolism Chair, which links the agency with PSL University (Paris Sciences et Lettres). The aim: to identify how interdisciplinary collaborations can help overcome the challenges of building future urban worlds.
Léone-Alix Mazaud, a CIFRE doctoral student (PCA-STREAM / École des Mines), here repositioned our definition of the “metabolic city” within a history of approaches to urban “metabolism”; a long-standing metaphor used in the study of urban systems, yet one that has been reconfigured over time.
Léonie Debrabandère is the Director of the WAAO, Lille’s architecture center, and curator of the exhibition “La ville tourne en rond?” How can we get away from anthropocentric, productivist logics and create a city that self-regulates, regenerates and recycles itself? The exhibition takes us on a semantic and tangible exploration of the circular city, allowing anyone to implement re-usable solutions on all scales.
Périg Pitrou is an anthropologist at the CNRS and head of the “Anthropology of Life” team at the Collège de France. He is Scientific Director of the City-Metabolism Chair, which brings together PCA-STREAM and PSL University (Paris Sciences et Lettres). The aim: to identify how interdisciplinary collaborations can help overcome the challenges of building the urban worlds of the future.
The notion of urban metabolism can be viewed in several ways. From a quantitative perspective, by considering flows; from a political ecology perspective, by considering social factors; and from an urban design perspective, by considering the sum of intertwined environmental and social ecosystems beyond administrative borders. In each of these approaches, urban technologies and the availability of data provide exciting prospects. To read the extended version : Do cities metabolize?
The use of the living organism metaphor in the field of urban system studies dates far back and is continuously reconfigured as events play out. Here, Léone-Alix Mazaud, a CIFRE PhD student (PCA-STREAM/École des Mines de Paris), repositions the meaning of the “urban metabolism” as defined by our firm within the history of approaches on the subject matter in order to highlight its unique features.
Caroline Goulard is a data journalist and co-founder of Dataveyes. She turns collected data into digital experiences to make it more understandable for everyone. Thanks to new ways of visualization, it is now possible to understand a population’s needs and to develop services that anticipate new uses.
Researcher and data scientist Stanislas Chaillou investigates how AI can enable architects to support and enhance their practice. A small sampler of a new book published by Éditions du Moniteur in March 2021.
François Taddei is a geneticist and co-founder, with Ariel Lindner, of the Learning Planet Institute (formerly known as CRI). Conceived as a school for the 21st century, the institute combines artificial intelligence and collective intelligence to reinvent ways of learning, teaching and doing research.
Hubert Beroche is the founder of the Urban AI think tank, dedicated to the field of urban artificial intelligence. He is the curator of the Eyes on the street lecture series, run together in partnership with the SCAI (Sorbonne Center for Artifical Intelligence), and explains here how urban AI can help us understand the city.
Contemporary architectural research is often fascinated by biological life but with an approach that goes beyond simple organic metaphors thanks to recent technological developments. Alisa Andrasek discusses the link between biology and her architectural practice, and her interest in the distribution of information in natural processes—a complexity that she tries to approach via big data. Her work in computational design is influenced by the convergence between information and materials, in an increasingly complex and open synthesis which enables it to go beyond the production of form and address the dynamic processes of matter itself. Alisa Andrasek is an architect, director and founder of the Biothing laboratory. She teaches at the Architectural Association of London.
Researcher Claire Lesieur works at the CNRS Ampère Laboratory on the Go Pro project, which applies a computational model developed for protein folding to urban environments. The shape-changing properties of proteins are put to use in an attempt to map out the opportunities for urban growth that don’t involve urban sprawl.
In the face of the promises of the prophets of artificial intelligence and the marketing of those major economic players promoting the smart city as a solution to urban ills, Jérôme Denis and David Pontille remind us of the irreducible materiality and fragility of cities. Demystifying what they perceive as a form of “neopositivism” of data, they point out that data doesn’t exist per se, and in fact must be generated and then maintained at a significant cost. As a result, data is never neutral and takes on a fundamentally political dimension. Understanding this framework leads them to promote a paradigm of maintenance and fragility, instead of the more common one of sustainability and resilience, when approaching urban realities.
stream voices
Eager to share more generously the results of its collaborations and research, PCA-STREAM publishes STREAM VOICES, its online magazine!