 He remains an active member of IPCC and contributes strongly to the development and dissemination of its scientific message.He established the Walloon platform for the IPCC, with the assistance of the Walloon government in Belgium to facilitate contacts between the IPCC, the scientific world and politicians.He was appointed by UNESCO to be part of a group of experts tasked with drafting a Declaration on Ethical Principles in relation to Climate Change (approved by the UNESCO assembly in November 2017).