This book is built on 15 years of scholarship in sociology, which gave Claire Lamine the opportunity to get her accreditation to supervise Ph.D. students. For an experienced academic in France, this kind of manuscript is like writing a second doctoral dissertation. That explains why this 224-page book is dense and mixes a strong theoretical basis and original empirical research. The book relates in-depth case studies from France and Brazil at different scales and provides a critical survey of social science approaches to sustainability transitions in agri-food systems. Lamine presents an original sociological approach to address the diverse pathways of transition encountered across multiple levels, from the farm through farmers’ networks and food chains, to the territorial scale of regions and states. She presents experiences carried out by stakeholders involved in agri-food systems to explore new possible connections between agri­culture, food, environment, and health, while also considering social equity issues. . . .