We propose a new data resource that attempts to overcome limitations of standard firm-level datasets for the UK (like the ARD/ABS) by building on administrative data covering the population of UK firms with at least one employee. We also construct a similar dataset for France and use both...

This paper explores how improved internet infrastructure impacts supply chains and economic activity, focusing on Türkiye. Using the expansion of fiber-optic networks and firm-to-firm transaction data, we find that better connectivity shifts input sourcing to well-connected regions and...

This paper summarizes the results from generalizing the simple two-city WFH model of Brueck-ner, Kahn and Lin (2021) through the addition of a group of non-remote workers, who must live in the city where they work. The results show that the main qualitative conclusions of BKL regarding the...

What role do spillover effects play in firm resilience during crises? Using high-frequency data on over 7 million import transactions, we ask this question in the context of the large trade disruption faced by US importers in the months immediately following the initial COVID-19 shock. While US...

This paper estimates the impacts of climate change in sub-Saharan Africa (SSA) on migration and other economic outcomes. I develop a quantitative spatial model that captures the role of trade networks, migration barriers, and agricultural yields on the geography of the economy. I combine the...

This paper studies the interstate effects of decentralized taxation and spending when individuals can work from home (WFH). Because WFH decouples population and employment, the analysis of tax impacts on state populations, employment levels, wages and housing prices is radically different than...

We look at a part of the spatial angle of economic growth. We introduce a new measure Spatial Population Concentration (SPC) that captures the weighted average population surrounding every person within a geographic area. The weights are a function of the distance between the person in question...

We use worldwide satellite data to analyse how population size and density affect urban pollution. We find that density significantly increases pollution exposure. Looking only at urban areas, we find that population size affects exposure more than density. Moreover, the effect is driven mostly...

We examine the effect of a large-scale administrative reorganization in China, where counties are annexed into cities to accommodate urban growth. We present a simple model to illustrate how this annexation may affect firm entry decisions and in turn land market outcomes. Using nationwide data...

We revisit the natural experiments of division and unification of Germany now that more time has passed and more data have become available. We show that local market access shocks are not symmetric in time. The negative shock to local market access following the division of Germany lead to a...