We demonstrate a striking but previously unnoticed relationship between city size and the black-white wage gap, with the gap increasing by 2.5% for every million-person increase in urban population. We then look within cities and document that wages of blacks rise less with agglomeration in the...

We present evidence that benefits from agglomeration concentrate within race. Cross-sectionally, the black-white wage gap increases by 2.5% for every million-person increase in urban population. Within cities, controlling for unobservable productivity through residential-tract-by-demographic...

Using the 2004 China economic census database, this paper examines the impact of information and communication technologies (ICT) on the geographic concentration of manufacturing industries, controlling for other determinants of industrial agglomeration. Higher geographic concentration is found...

This study provides an initial empirical analysis on identifying the general relationship between housing values and the spatial distribution of same-sex couples across the U.S. The paper uses the 1990 and 2000 census 5% Public Use Microdata Samples and introduces the gay index into the...

Using a sample of more than 0.3 million marathon runners of 56 race events in China in 2014 and 2015, we estimate the air pollution elasticity of finish time to be 0.041. Our causal identification comes from the exogeneity of air pollution on the race day because runners are required to register...

Whether, and how much, increased commute costs decrease labor supply is important for transport policy, city growth, and business strategies. Yet empirical estimates are limited and biased downward due to endogenous choices of residences, workplaces, commute modes, and wages. Using the...

Previous studies have mixed findings on the relation between corporate socially responsible policies and firm performance. This paper focuses on a specific type of corporate social responsibility — corporate sexual equality, measuring how a firm treats its lesbian, gay, bisexual, and...

Most highways in urban China are tolled to finance their construction. During the eight-day National Day holiday in 2012, highway tolls were waived nationwide for passenger vehicles. We use this to identify the effects of highway tolls on air pollution. Using daily pollution and weather data for...

The Chinese government has been using annual quotas to control the amount of farm-land that can be converted for urban uses in cities. Using a sample of more than 1.5 million land-lease transactions during 2007-2016, we document facts on land conversion for urban development in China. We present...