Athanasios (Thanos) Polyportis, PhD is a senior researcher and lecturer in the Department of Media and Communication. His research is situated in strategic communication, with a particular focus on sustainability communication and AI-mediated communication, grounded in consumer behaviour and decision-making. Across these areas, he studies how communication enables or hinders responsible transitions as sustainability challenges and artificial intelligence reshape everyday life, organisations and society.

Thanos is Principal Investigator of From Barriers to Bites: Ultra-Brief Tailored Messages for Plant-Based Food Choices, funded through the NWO Open Competition XS. He also leads GENAIRE: Generative AI in Research Workflows, Measuring and Reducing Environmental Impact, funded through the NWO/KIN Sustainable Science Fund. Within CUES (Consumers' Understanding of Eating Sustainably), a Horizon Europe project examining pathways towards more sustainable food consumption, Thanos serves as co-coordinator, leading cross-national research and connecting individual behaviour with wider communication, social and institutional contexts. His work has appeared in journals including Corporate Reputation Review, Resources, Conservation and Recycling, Journal of Consumer Behaviour, Computers in Human Behavior: Artificial Humans, and Cleaner and Responsible Consumption. He serves as Section Editor at Corporate Reputation Review.