Description of Impact(s) (English Only) A study in “Nature Sustainability” examines knowledge gaps in the IPBES Regional Assessments. The authors explain that “to guide research that better informs policy and practice, we systematically synthesize knowledge gaps from recent assessments of four regions of the globe and three key themes by the Intergovernmental Science-Policy Platform for Biodiversity and Ecosystem Services. We assess their relevance to global sustainability goals and trace their evolution relative to those identified in the Millennium Ecosystem Assessment.”