Dr. Nigussie Haregeweyn will provide an in-depth overview of erosion-driven land degradation, exploring the science, policy, and development efforts aimed at mitigating its impacts. Drawing from a decade-long collaborative research project involving six Japanese and Ethiopian institutions in the Upper Blue Nile Basin—one of the world’s most erosion-prone and politically complex transboundary river systems—this speech will highlight key lessons learned and their broader applicability. By linking regional-level insights with global-scale perspectives, the presentation will introduce a comprehensive framework designed to bridge gaps between science, policy, and practical implementation in sustainable land management. The discussion will invite reflections on how this framework could be adapted to address similar challenges in comparable regions across the world.