Stephan Lewandowsky is one of the world’s leading cognitive immunologists. He conducts research at the University of Bristol and has published more than 200 scholarly articles and books, including The Debunking Handbook, The COVID-19 Communication Handbook, and The Conspiracy Thinking Handbook. He explores people’s responses to misinformation and propaganda. Why do people reject well-established scientific facts? Is our online information ecosystem conducive to democracy? Professor Lewandowsky has received multiple awards for his research.