Urban metabolism, at the heart of the matter

“ Exchanges of material flows are territorialized: in this sense, they are part of systems of power. ”

  • Publish On 5 March 2025
  • Clément Dillenseger, Pierre Desvaux
  • 32 minutes

When we speak of urban metabolism, we are generally referring to the materials that enter and leave the city organism. Among these, waste plays a decisive role, challenging our understanding of what is clean and what is dirty, what is at the end of its life and what can be reused, what is new and what is outdated. Thus, studied from a qualitative rather than quantitative approach, waste reveals a great deal about our urban imaginations, which differ from country to country across the globe. This is what geographers Clément Dillenseger and Pierre Desvaux explain in Métabolisme(s). Matière en circulation, matière en transformation [Metabolism. Circulating matter, transformed matter] (co-authored with Laëtitia Mongeard, published by Éditions deux-cent-cinq). Read the podcast’s transcript.

Bibliography

explore

Article
Article

Reshaping myths to reveal pressing realities

Ashfika Rahman is a visual artist based in Bangladesh, who recently won the Future Generation Art Prize awarded by the PinchukArtCentre in Ukraine. Faced with the overwhelming power of information systems that are serving dominant narratives, she is working on creating alternative medium of expression, giving their voice back to marginalized communities in her homeland, particularly women. Through her art, Rahman questions myths, folk tales and widely spread prejudice that are still shaping our cultures and legitimating violence, adopting a contemporary and feminist lense. We met with her to discuss her recent work, Behula These Days where she brings together ancient crafts and new techniques to share the poignant and heart-wrenching experiences of women living in one of the most floodprone areas in Bangladesh.

Discover
Article
Article

Podcast transcript: urban metabolism, at the heart of the matter

In urban planning and geography, the concept of metabolism is frequently discussed. This organicist metaphor likens a territory to a body, traversed by flows of materials and energy that link it to its environment. From a quantitative perspective, these flows can be measured over time and space to assess what a territory consumes, processes, and produces. However, a qualitative approach is equally crucial, examining the political and social trade-offs that shape urban metabolisms. With this in mind, we spoke with two researchers, Clément Dillenseger and Pierre Desvaux, who have explored the waste sector to analyze the socio-technical infrastructures that underpin metabolism and the imaginaries that shape its perception.

Discover
Article

Capturing the Cityscape Through Photography

Émilie d'Orgeix, Corinne Feïss-Jehel, Pierre-Jérôme Jehel

Article

Capturing the Cityscape Through Photography

Over the span of several months, students from GOBELINS Paris scouted La Défense, examining the iconic business district from the fresh perspective of urban metabolism. As part of a documentary workshop led by Pierre-Jérôme Jehel and Laetitia Guillemin (GOBELINS) and designed in partnership with researchers from the City-Metabolism Chair at PSL University, some thirty students explored this territory. They did so by treating it not as a mere backdrop but as a living organism, traversed by flows, tensions, and rhythms, using photography as a tool for revelation. Their projects, located at the crossroads of artistic creation and research, unveil an alternative reading of this mineral space, between invisible flows and underlying tensions. Both sensitive and rigorous, this inquiry is chronicled here by Corinne Feïss Jehel (EPHE-PSL), Pierre-Jérôme Jehel, and Émilie d’Orgeix (EPHE-PSL) as part of a research project conducted by the City-Metabolism Chair (which is financially supported by PCA-STREAM, Artelia, and Groupama Immobilier).

Discover
Article
Article

The potential of the night

Once a sanctuary for dreams and imagination, nighttime has now been relegated to the mere role of a utilitarian prelude to daytime. Nocturnal realms possess an alchemical power capable of transfiguring our perceptions. However, when viewed through the lens of urban uses, the night also exacerbates inequalities and raises questions about the possibility of achieving an urban night that is accessible to everyone. Exploring the range of possibilities associated with the night reveals it as a space-time where complex interactions are woven that could be revitalized through a chronotopic and inclusive architecture.

Discover
Podcast

“ En architecture, le sonore demeure une dimension à la fois floue et insaisissable. Il échappe au dessin et au plan, et pourtant, c’est lui qui fait vibrer l’espace, qui le rend habitable et mémorable.  ”

Podcast

“ En architecture, le sonore demeure une dimension à la fois floue et insaisissable. Il échappe au dessin et au plan, et pourtant, c’est lui qui fait vibrer l’espace, qui le rend habitable et mémorable.  ”


Sound, the Great Forgotten Dimension of Architectural Practice

Carlotta Daro co-led, together with Nicolas Tixier, the Radio Utopia project that animated the French Pavilion at the Venice Biennale in 2023. She is now part of the Gramazio Kohler research group, which focuses on the contribution of digital technologies and new materials to architectural design. There, she leads a research project dedicated to developing virtual reality tools enriched with acoustic simulations, designed to support architects throughout their creative process. This work paves the way for a constructive approach in which sound—too often considered primarily as a nuisance—moves beyond measurement and mitigation to become a perceptual and experiential factor.

Discover
Vidéo
Vidéo

Bringing together an architectural project and a collection project 

L’agence PCA-STREAM dirigée par l’architecte Philippe Chiambaretta a signé en 2006 le projet de réhabilitation d’un immeuble tertiaire destiné à accueillir le tout nouveau Centre d’Art Contemporain de Kiyv. Le projet architectural s’est construit en parallèle du positionnement éditorial et de la constitution de la collection, en collaboration étroite avec le mécène du projet Viktor Pinchuk et le curateur Nicolas Bourriaud. Retour sur la genèse de ce projet ambitieux, destiné à ouvrir l’Ukraine sur le Monde.

Discover
Podcast

“ Architecture has a unique relationship with the transformation of reality: it is, in a way, atlastic. ”

Podcast

“ Architecture has a unique relationship with the transformation of reality: it is, in a way, atlastic. ”


Architecture is a political practice

Manuel Bello Marcano is an architect, lecturer at ENSA Saint-Etienne and sociologist of the imaginary at the Centre d’études pour l’actuel et le quotidien – CEAQ, Université Paris Descartes (Center for Current and Everyday Studies at Paris Descartes University). In his view, architecture is an act of aggregation designed to put the world in order: in this sense, he is interested in the political fictions mobilized to equip our thinking and, in this case, to build a “ togetherness ”. Follow his words and discover animality understood as community.

Discover
Article
Article

Educating Citizen Architects: for a meaningful architecture

Andrew Freear runs the Rural Studio program at Auburn School of Architecture (USA). He believes that schools of architecture have an ethical responsibility to train citizen architects who are locally committed to concrete projects and experientially connected to contexts and places. To design an inclusive city, the Studio adopts an experimental field approach, combining analysis of the territory’s endemic problems, understanding of residents’ needs and new construction techniques. Read the full interview published in STREAM 05!

Discover