On 26th October 2021 the participants of the Ad hoc Global Assessment Dialogue (AGAD) met to: 1. UNEP’s Chief Scientist’s brief on the UNEP’s revised publication system and Q&A; 2. Presentation of a paper on the UNEP/GEO approach to glossaries and discussion on possible collaboration on glossaries and terminology; 3. Discussion of analysis needed to evaluate options for collaboration on modelling and scenarios.