We are pleased to kick off season 4 by talking about what ecological economists need to know about human behaviour. Our guide to these issues is Kristian Steensen Nielsen, a behavioural scientist and assistant professor at Copenhagen Business School focusing on the role of behaviour change in mitigating climate change and conserving biodiversity. Kristian specialises in identifying the feasibility and scalability of initiatives to change behaviour, understanding how individual behavior changes can contribute to limiting ecological damages.