Dust and Death: Evidence from the West African Harmattan

Dust pollution in West Africa increases infant and child mortality. Employing differences in differences, we make three contributions. First, using data from 12 poor countries, we highlight the vulnerability of people with few resources, fragile health, and limited capacity to adopt avoidance behavior. Second, we examine prenatal and post-natal parental investment responses, and show evidence consistent with compensating behaviors. However, despite these efforts, the health of surviving children is still adversely affected. Third, we investigate differential impacts over time and across countries. We find declining effects over time, implying in the absence of reductions in dust itself that societies are adapting in some way. Using national-level measures of macroeconomic conditions and public health resources, we find suggestive evidence that both economic development and public health improvements have contributed to this adaptation, with health improvements seemingly playing a stronger role.