A network of open laboratories works with local authorities, managers, professionals, associations, and populations to restore the habitability of territories. Olivier Ragueneau is research director in the French national research center (CNRS) in Brest, and coordinator of the Zones Ateliers network. You are the scientific delegate for the Zones Ateliers (workshop zones) network. What is a Zone Atelier? Olivier Ragueneau: It is an open structure organized on a well-defined territory: a river, a mountain range, a city. Researchers from different fields work on issues linked to sustainability, or the Earth’s habitability, together with local stakeholders. We aim to reconnect human beings and their environment, which scientific studies have separated for at least two centuries, by tackling the complexity of socio-ecosystems, in order to reposition human activities within the environment and the great planetary cycles, taking limits into account. For example, in Brittany, the “Zone Atelier Brest Iroise”, of which I am a member, studies the land-sea continuum, while the “Zone Atelier environnementale rurale Argonne” focuses on hyper-rurality, in the North-East of France. They have a variety of issues, but within each of them, we are developing similar approaches: interdisciplinary, with natural sciences, human and social sciences, and engineering sciences; and transdisciplinary, with local stakeholders involved in joint research. What does this network do? O. R.: The Zones Ateliers network is a CNRS Ecology and Environment initiative. There are 16 Zones Ateliers, with two more under construction in overseas France. The existence of a network enables us to link up the experiments and approaches developed in each of the Zones Ateliers, for comparative purposes. We stimulate projects in which we can test hypotheses along gradients, whether climatic, of human impact, and so on. For example, on the question of the history of relations between researchers and stakeholders, and their impact on the transformation of public policies: is the same thing happening in a recent Zone Atelier where researchers are starting to work with stakeholders, and in Zones Ateliers that have been developing links with non-scientific stakeholders and policy-makers for 20 or 30 years? The environmental and political context of agro-ecological transition differs greatly from one Zone Atelier to another, and it is interesting to draw comparisons. For example, in Brittany, with green algae and intensive agriculture, we are in a territory that is extremely blocked from a political and economic point of view, with the whole agro-industrial system. It is less conflictual elsewhere. The adaptation of flora and fauna to climate change is different in alpine pastures, in cities and by the sea, where there are risks of erosion and submersion in coastal areas due to the frequency of storms. Why is it important to take this diversity into account? O.R.: The collapse of biodiversity and climate change are creating a situation where transformative action is becoming increasingly urgent. But this cannot be decided in a top-down, uniform and prescriptive way: if we try to apply homogeneous indicators or criteria in different contexts, it will not work. And populations generally rebel against this. We have seen this in Brittany with water quality indicators: those established at national or European level do not work and cause a whole host of problems. It is essential to take into account the diversity of our socio-ecosystems. This will be at the heart of the Transform Priority Program and Equipment (PEPR Transform) currently being contracted by the French national research agency (ANR). In September 2024, the Zones Ateliers network organized a symposium entitled “Co-constructing research on socio-ecosystems”. What does this mean in concrete terms? O.R.: For us, the term “co-construction” covers the entire research process, starting with the emergence of research questions. For example, we were approached by fishermen who could no longer fish for scallops in the bay of Brest, because there were toxic phytoplankton, and fishing was banned. Together, we have discussed their problems, we have confronted this with the expertise we have, and the knowledge we lack. If we assess that we can set up a research project together, then we transform a public problem into a research question, and we can engage in co-research with different stakeholders, who will carry out experiments, for example. This can include participatory science, because as the project progresses, we will need to collect data, with the help of citizens and professionals. And then, in the analysis and restitution, we may also want to involve different stakeholders. Why is this co-construction important? O. R.: The main interest is to bring politics back to the territories, in the sense of citizen participation in the life of the city: it is more efficient to involve people than just explain things with a conference. Being involved in research, non-scientific stakeholders, participate to the production of knowledge. What is more, as today science is criticized, and fake news are everywhere, this approach enables us to disseminate the scientific methods, and not just the results of research. For example, in Brittany, on the issue of “green tides”, we are running participatory science projects with agricultural high schools: working with young people who are future farmers could help to break the conflict between scientists and farmers, who question the data. Involving students in sampling, measuring nitrates, explaining long-term trends and discussing with them goes far beyond raising awareness. They take ownership of the scientific approach, which gives them empowerment back. This is in line with the theory of inquiry, developed by the American philosopher John Dewey in the early 20th century, and taken up again in recent decades by the French philosopher Bruno Latour. What is more, we are doing this with people who often do not think they have the capacity to do so: it is rewarding for them. The assumption we make in the Zones Ateliers network is that the co-construction of knowledge has a performance-enhancing effect, and leads to greater transformations in public policy than if we only transmit scientific data to decision-makers, with the hope that they will make the right decisions for sustainability and socio eco-systems good