Renan Oliveira's work consistently articulates the areas of environmental sociology and social studies of science, providing a comprehensive view of central problems in the turbulent contemporary world. His fruitful reading of national and international authors enables the reader to situate the Brazilian and Latin American reality within the environmental risks of modern capitalism, a task that we perceive as essential today. Renan's case study of tanneries shows how the local reality needs to pay attention to the environmental and technological challenges of economic production, rather than delegating scientific decisions to agents uncommitted to public issues. Thales Haddad Novaes de Andrade.