Historically, improvements in the quality of municipal drinking water made important contributions to mortality decline in wealthy countries. However, water disinfection often does not produce equivalent benefits in developing countries today. We investigate this puzzle by analyzing an abrupt,...

Standard measures of bodyweight (overweight and obese, for example) fail to reflect technological progress over time - and in particular, recent progress disproportionately promoting longevity at higher bodyweights (and differences in access to it). This paper builds on the pioneering work of...

This paper examines whether an intra-household externality prevents adoption of a technology with substantial implications for population health and the environment: improved cookstoves. Motivated by a model of intra-household decision-making, the experiment markets stoves to husbands or wives...