Chief Scientific Adviser, Foreign and Commonwealth Office UK
Senior Director of International Affairs and Science Diplomacy, American Association for the Advancement of Science
Head of Unit H1: Knowledge for Policy (Concepts and Methods), Joint Research Centre of the European Commission
Deputy Secretary-General, World Meteorological Organization
Research Programme Agent, ERC Executive Agency
Former Director-General UNESCO, Foundation for a Culture of Peace
Director of Policy Initiatives, Center for Open Science
Director of International Monitoring Systems (IMS), Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO)
Full Professor, Université Panthéon-Assas Paris 2
President, World Federation of Science Journalists
Research scientist CSIC, National Centre for Biotechnology (CNB-CSIC)
Chair of Executive Committee, LAAAMP (Lightsources for Africa, the Americas, Asia and Middle East Project) Executive Committee
Chief, Policy and Analysis Branch at Division for Sustainable Development, UN-DESA, Secretariat of Technology Facilitation Mechanism
Executive Director, The World Academy of Sciences (TWAS)