Dave Donaldson teaches and carries out research on trade, both international and intranational, with applications in the fields of International Economics, Development Economics, Urban Economics, Economic History, Environmental Economics, and Agricultural Economics. He has studied, among other topics: the welfare and inequality effects of market integration, the impact of improvements in transportation infrastructure, how trade can mitigate and exacerbate the effects of climate change, and how economists can quantify market failures and the interventions (such as industrial policy) that attempt to fix them. He was awarded the 2017 John Bates Clark Medal, given by the American Economic Association to the US-based economist “under the age of forty who is judged to have made the most significant contribution to economic thought and knowledge”, as well as an Alfred P. Sloan Research Fellowship and several grants from the National Science Foundation. He has served as a co-editor at Econometrica and American Economic Journal: Applied Economics and is a Fellow of the Econometric Society and a member of the American Academy of Arts and Sciences. A native of Toronto, Canada, Donaldson obtained an undergraduate degree in Physics from Oxford University and a PhD in Economics from the London School of Economics.