Abstract
This third volume of contributions from members of the IRD community - scientists, experts, artists, project leaders and representatives of civil society - brings the total number of articles published on this theme since 2022 to over 100. Structured around the triptych ''understand, co-construct, transform'', these articles collectively amount to a compendium of sustainability science, a science which is rapidly emerging as a key response to some of the greatest challenges of the 21st century, and a catalysing force for the necessary societal transformations.