We study the impact of the "Fridays for Future" climate protest movement in Germany on citizen political behavior and explore possible mechanisms. Over the course of 2019, large crowds of young protesters, most below voting age, skipped school to demonstrate for rapid and far-reaching measures...

We show that the creation of the first integrated pan-European transport network during Roman times influences economic integration over two millennia. Drawing on spatially highly disaggregated data on excavated Roman ceramics, we document that interregional trade was strongly influenced by...

In the latter half of the fourth millennium BC, our ancestors witnessed a remarkable transformation, progressing from simple agrarian villages to complex urban civilizations. In regions as far apart as the Nile Valley, Mesopotamia, Central Asia, and the Indus Valley, the first states appeared...