 My name is Thomas Chane. I've been in Toulouse for four years now and I do international trade. The macroeconomics group in Toulouse is small in size but we cover with my colleagues a whole range of topics from thinking about the role of information in macroeconomics to thinking about the economic crisis and economic booms to thinking about how to design an optimal tax system. Let me tell you about a very exciting new project I'm working on. So I've teamed up with colleagues, both historians and economists. Together we are working on letters between merchants 4,000 years ago in the Bronze Age in this merchant civilization of Assyria. First, we test modern theories of international trade on these very, very ancient trade flows. We use this model to pinpoint the location of lost cities and our economic model and the data on exchanges between merchants allows us to make a guess about where these lost cities are located. For international trade, there is a whole range of new questions that are emerging from the newly available data on economic exchanges within cities. That allows international trade economists to use theories developed for international trade and apply these theories for intranational trade, trade within countries or even within cities. It's new exciting data that are being treated by researchers today.