The specificity and strength of the projects I develop consist in deploying in fields worked over the long term, a highly interdisciplinary approach, built at the interface between human and social sciences, natural sciences and engineer sciences. Each project aims to identify the blockages and levers in the transformation towards sustainability, in a theoretical and practical way. Beyond the production of knowledge in science, our projects provide means of action from the mobilization of complex, integrated and multi-scale approaches. To do this, I associate and combine several disciplines and expertise by working on objects, fields and common questions.