This project explores how Brazil’s political divides influence how government officials interpret and use evidence in climate change-related policymaking. In partnership with ENAP, IPEA, and FLACSO Brasil, we investigate how public institutions can remain resilient amid political shifts and continue to base decisions on sound evidence. We examine what counts as credible evidence, who decides that, and how these views shape climate policy. Methods include participant observation, interviews, focus groups, social network analysis, document analysis, and a large-n survey. The study focuses on the debates and decisions leading up to COP30, which Brazil will host in November 2025.