We investigate the relationship between the extent of a city's subway network, its population and its spatial configuration. For the 632 largest cities in the world we construct panel data describing population, measures of centralization calculated from lights at night data, and the extent of...

We examine the relationship between urban characteristics in 1960 and urban growth (income and population) between 1960 and 1990. Our major findings are that income and population growth move together and both types of growth are (1) positively related to initial schooling, (2) negatively...

This paper surveys recent literature examining the relationship between environmental amenities and urban growth. In this survey, we focus on the role of both exogenous attributes such as climate and coastal access as well as endogenous attributes such as local air pollution and green space. A...

Urban flooding poses danger to people and places. People can adapt to this risk by moving to safer areas or by investing in private self-protection. Places can offset some of the risk through urban planning and infrastructure investment. By constructing a global city data set that covers the...

By empirically assessing the competitiveness of 505 cities around the world from regional, national and other perspectives, this book not only ranks these cities but also presents a treasure trove of information with regard to each city’s relative strengths and weaknesses. This unique resource...

This paper proposes a simple theory of a system of cities that decomposes the determinants of the city size distribution into three main components: efficiency, amenities, and frictions. Higher efficiency and better amenities lead to larger cities, but also to greater frictions through...

Chapter 1: The Startup Common -- Part 1: Exploring the Startup Common -- Chapter 2: Creating Pillar Companies -- Chapter 3: Launching Startups from Universities -- Chapter 4: Deepening the Human Capital Pool -- Chapter 5: Sourcing Investment Capital -- Chapter 6: Building Mentor Networks --...