Professor Emeritus at the Chemical Engineering School of the National Technical University of Athens (NTUA) in Greece. Head of the NTUA Research Group BIOTOPOS, specialized in the engineering of biological resources and systems, the utilization of biomass in the production of bioenergy and other bio-products and bio-services, and the management and strategy of socio-technical change.

His current activities focus on issues of sustainability, the use of technology foresight tools, and the emergence of bioeconomy and bio-society, with emphasis on bio-greening aspects. His published work consists of more than 500 journal, conference and other outputs, which have so far obtained more than 4000 citations.