This paper develops a theoretical model for analyzing gene bank management decisions regarding the search for traits of economic value in ex situ collections of wheat. The model is applied to data on the probability of finding useful sources of resistance to Russian wheat aphid (Diuraphis noxia)...

Using data on the distributions of disease and pest resistance among wheat varieties, this paper reports theoretical and empirical findings concerning the efficient management of a gene bank and the optimal size of a collection.

Worldwide, the number of genebanks and the amount of seed stored in them has increased substantially over the past few decades. Most attention is focused on the likely benefits from conservation, but conserving germplasm involves costs whose nature and magnitude are largely unknown. In this...

This paper reports the results of a major study of the impact of international agricultural research, covering eleven crops in all major regions of the developing world, over the period 1960-2000. Although much of the "common wisdom" concerning the Green Revolution suggests that gains from...

This paper explores the extent to which migration-related capital flows can explain the variation in investment rates and current and capital account imbalances across OECD countries. Migrants must be equipped with machines, and the resulting demands for capital are likely, all else being equal,...

Across countries, women and men allocate time differently between market work, domestic services, and care work. In this paper, we document the gender division of work, drawing on a new harmonized data set that provides us with high-quality time use data for 50 countries spanning the global...

Both policy makers and researchers have devoted considerable attention in recent years to the large current account and capital account imbalances among OECD countries. In particular, the size of the United States current account deficit has attracted intense attention and spawned numerous...

The World Health Organization (WHO) reports that malaria, a parasitic disease transmitted by mosquitoes, causes over 300 million episodes of acute illness and more than one million deaths annually. Most of the deaths occur in poor countries of the tropics, and especially sub-Saharan Africa. Some...

We study the impact of global climate change on the prevalence of tropical diseases using a heterogeneous agent dynamic general equilibrium model. In our framework, households can take actions (e.g., purchasing bednets or other goods) that provide partial protection from disease. However, these...