Dr Christian Krekel is Assistant Professor in Behavioural Science in the Department of Psychological and Behavioural Science, London School of Economics and a Research Associate at the Centre for Economic Performance, London School of Economics, and at the Wellbeing Research Centre, University of Oxford. He is an applied economist: his research fields are behavioural economics and wellbeing, policy and programme evaluation, and applied panel and spatial analysis. He obtained my PhD in Economics from the Paris School of Economics. His research looks at how our environment affects our lives – specifically our behaviour, health, and (ultimately) our wellbeing. He is also interested in using nudges to increase pro-environmental behaviour. His work is aimed at improving evidence-based policy on how to improve these outcomes in a cost-effective manner. Christian is a frequent advisor to international organisations such as the World Bank or the Organisation for Economic Co-operation and Development (OECD). He also advises national governments, for example, on how to use wellbeing data for policy analysis and appraisal. For his work, Christian has been awarded the Young Economist Award (FEEM Award) by the European Economic Association.