Georg F. Zellmer received his PhD from the Open University, UK, in 1999, and subsequently worked as research fellow at the University of Bristol, the Lamont-Doherty Earth Observatory, the University of Hawaii at Manoa, and Academia Sinica (Taipei). In 2013 he was appointed to Massey University, New Zealand, where he was working as Professor in Earth and Planetary Sciences. In March 2025, he transitioned to the University of Bonn, Germany, taking the position of Chair of Petrology. His work focuses on timescales of petrogenetic processes and their links to volcanic eruptions, magmatic hygrometry, volatile cycling through subduction zones, and integrating geophysical and geochemical observations at global destructive plate margins. Since June 2020, Georg Zellmer is Executive Editor of Journal of Petrology.