Liliana Mammino is professor emeritus in the School of Mathematical and Natural Sciences of the University of Venda (UNIVEN, South Africa). She completed her 5-year chemistry degree at the University of Pisa (Italy) and her PhD at Moscow State University (Russia), with theoretical chemistry theses in both cases. Her work experience includes working in the Departments of Chemistry at the National University of Somalia (1974 - 1975), University of Zambia (1988 - 1992), National University of Lesotho (1993 - 1996) and UNIVEN since 1997, teaching general chemistry and physical chemistry courses and, at UNIVEN, also the process technology course. Her research interests comprise theoretical/computational chemistry (with particular focus on the computational study of biologically active molecules) and chemistry education (with particular focus on conceptual understanding, the role of language in science learning, and green chemistry education). She has published extensively in both areas. Sheis a titular member in Division III of IUPAC and representative of Division III at the IUPAC Interdivisional Committee on Green Chemistry. She was a recipient of the IUPAC award for Distinguished Women in Chemistry and Chemical Engineering in 2013Jan Apotheker retired in December 2016 as lecturer in science education at the University of Groningen, where he was involved in training both secondary school teachers as well as the faculty staff. Between 2014 an 2016 he coordinated the FP-7 project’Irresistible’. in which State of the art science research was introduced in the science classroom. He is chair of the Committee on Chemistry Education of IUPAC, and chief editor of ‘Chemistry Teacher International’.