Effective conservation requires a shared language to identify and assess threats to ecosystems and species. Since 2008, the IUCN Species Survival Commission and Conservation Measures Partnership have maintained a unified Threats Classification to guide planning, action, and learning. Now, with input from thousands of projects and users, Version 4.0 is here and introduces refined categories, new threat types, and detailed modifiers for deeper analyses. This update enhances how practitioners address challenges like climate change, invasive species, and human impact—empowering more precise, impactful conservation efforts worldwide. Access the IUCN –…