The World Bank Human Capital Index (HCI) is based on the productivity gains of future workers from human capital accumulation. But in many developing countries, a sizeable fraction of people are not employed, or are in jobs in which they cannot fully use their skills and cognitive abilities to...

Students around the world are going to school but are not learning-an emerging gap in human capital formation. To understand this gap, this paper introduces a new data set measuring learning in 164 countries and territories. The data cover 98 percent of the world's population from 2000 to 2017....

A large literature documents the positive influence of a city's skill structure on its rate of economic growth. By contrast, the effect of a city's age structure on its economic growth has been a hitherto largely neglected area of research. This paper hypothesizes that cities with more...