We use cross-country data to explore whether temperature and rainfall shocks trigger violent conflict, or not. We include a wide range of country and time samples, and explore whether the impact of weather shocks is conditional on income or political regimes. Our overall conclusion is sobering....

Conventional wisdom implies that high discount rates accelerate depletion of tropical forests. As shown in this article, this result does not necessarily hold in a two-state variable model that distinguishes between primary and secondary forest stocks. In the context of a fixed concession period...

A model of elephant conservation that includes illegal poaching, enforcement effort, and legal culling is used to analyze enforcement and elephant populations for alternative policies, with and without legal trade in ivory. Consistent with previous theoretical models, banning trade may increase...

We critically evaluate the empirical basis for the so-called resource curse and find that, despite the topic's popularity in economics and political science research, this apparent paradox may be a red herring. The most commonly used measure of "resource abundance" can be more usefully...

We critically evaluate the empirical basis for the so-called resource curse and find that, despite the topic’s popularity in economics and political science research, this apparent paradox is a red herring. The most commonly used measure of ‘resource abundance’ can be more usefully...

We explore the relation between historical population density in former colonies and modern income distribution. A theoretical model highlights the potentially opposing effects of native population density on incentives for colonists to conquer or settle in new territories. While an abundant...

Energy efficiency is a key component of climate policy. We study micro and macro rebound effects after the introduction of energy-efficient biomass cookstoves (EEBCs). We develop a model of biomass supply and demand in rural Africa. The impact of EEBCs is empirically explored in Rwanda where we...