Global scientific assessment processes are intended to synthesize information from across many regions of the world. This involves reviewing and including information from many sources, including those published in different languages and with authors from different countries. These processes aim to mobilize a broader knowledge base and increase legitimacy of these assessment processes.This project analyzed how well the eight published assessments of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) integrated: (1) information from sources published in multiple languages and (2) included experts from multiple countries in the assessment process.