The World Health Organization attributes about 3.3 million annual premature deaths to outdoor air pollution in low- and middle-income countries. Comprehensive pollution monitoring in urban areas has been too costly for many developing countries; yet sparse information has hindered cost-effective pollution management strategies.

In rural Bangladesh, Indoor Air Pollution (IAP) is dangerously high for poor households dependent on biomass cooking fuels. Based on earlier World Bank research, controlled, scientifi cally monitored experiments were conducted in Burumdi village,
Narayanganj District, to test the effects of structural