We discuss recent trends in agricultural productivity in Africa and highlight how
technological progress in agriculture has stagnated on the continent. We briefly review the …

In the presence of markup differences, externalities, and other social effects, the direction of
innovation can be systematically distorted. I build a simple model of endogenous technology …

Reductions in greenhouse gas emissions are a global public good, which makes it efficient
to act globally when addressing this challenge. We lay out several reasons that high-income …

This Viewpoint article synthesizes seminal research from multiple disciplines in a virtual
special collection (VSC) of Elsevier articles to highlight critical remaining steps to achieve a …

Coverage of ChatGPT-style large language models (LLMs) in the media has focused on
their eye-catching achievements, including solving advanced mathematical problems and …

This article studies how innovation reacts to climate change and shapes its economic
impacts, focusing on US agriculture. We show in a model that directed innovation can either …

Impacted by both economic and political forces, agricultural research serves as a critical
approach to alleviating the adverse effects of climate change. Focusing on public …

Developing countries face the joint challenge of reducing poverty and adapting to a
changing climate, while in some cases also needing to reduce their greenhouse gas …

Post-war growth in agricultural productivity outpaced the US non-farm economy, spurred by
steadily increasing crop yields. We argue that rising atmospheric CO₂ is responsible for a …

This paper shows that large, multi-establishment business enterprises face a high cost of
middle management in poor countries and that this cost inhibits the growth of the modern …