Philippe Aghion, Peter Howitt, and Joel Mokyr. Philippe Aghion, research associate Peter Howitt, and NBER board member Joel ...

Empirical research has revolutionized how we understand the global economic impacts of climate change. Recent empirical analyses have tested theoretical ideas, challenged prior estimates, and revealed ...

We investigate the returns to being a hub country by analyzing how transshipment activity shapes trade and supply chains. We show that most US imports---especially from smaller origin countries---are ...

Multiple lines of research aim to quantify the economic impacts of climate change, including through reduced-form and structural approaches. We show that the effects of climate change on economic ...

In this study, we use microdata from 12 Florida county-level school districts and a regression discontinuity design to examine the effects of early grade retention on the short-, medium-, and ...

The NBER Board of Directors appointed 51 research associates, 49 of whom were promoted from faculty research fellows, at its September 2025 meeting. Two of the new appointees were former research ...

In this paper, we propose an approach for evaluating the trade-offs inherent in different approaches used to match Current Population Survey (CPS) respondents across ...

Global value chains have come under severe scrutiny in the past few years. Pandemic-era shortages, geopolitical concerns, and new industrial strategies have all revived an old worry: have firms become ...