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...

This paper quantifies how much of violent crime in society can be attributed to football-related violence. We study the universe of professional football matches played out in Germany's top three football leagues over the period 2011-2015. To identify causal effects, we leverage time-series and...

The paper studies whether a drought in 1788 affected the outbreak of peasant revolts during the French Revolution. I construct a community-level data set with information on local drought severity and peasant uprisings in 1789. Results indicate that those more affected by the drought more often...

While World War II (WWII) is often employed as natural experiment to identify long-term effects of adverse early-life and prenatal conditions, little is known about the short-term effects. We estimate the short-term impact of the onset of WWII on newborn health using a unique data set of...

In 2022, Germany introduced a temporary 9-euro monthly ticket for unlimited local and regional public transport. We investigate its impact on mobility patterns, including increased public transport usage, reduced car traffic, and rail network congestion. Using difference-in-difference and...

We estimate the impact of Covid-induced working from home (WFH) on offline consumer spending in urban agglomerations. Our analysis draws on postcode-level data on card transactions and WFH patterns in major German cities between January 2019 and May 2022. We address endogeneity in WFH uptake by...

We estimate the impact of the Covid-induced shift to working from home (WFH) on offline consumer spending within cities. The analysis builds on a postcode-level panel (2019–2023) of novel cellphone mobility and payment card transaction data for 50 German metropolitan areas (MAs)....

There is a vigorous debate on whether arrests for domestic violence (DV) will deter future abuse or create a retaliatory backlash. We study how arrests affect the dynamics of DV using administrative data for over 124,000 DV emergency calls (999 calls) for West Midlands, the second most populous...