Christian Gollier is an internationally renowned researcher in Decision Theory under Uncertainty and its applications in climate economics, finance, and cost-benefit analysis, with a special interest for long term (sustainable) effects. He is fellow of the Econometric Society, and won the Paul Samuelson Award for his 2001 MIT book “The Economics of Risk and Time”. With Jean Tirole, he created the Toulouse School of Economics, where he serves as director (2007-2015 and 2017- ). He is the president of the European Association of Environmental and Resource Economists (EAERE). He is one of the Lead Authors of the last two reports of the IPCC on climate change.