Methane-monitoring satellites that zoom in on sources of the climate-warming gas show that landfills contributed to more than 25% of methane emissions in Mumbai and 6% in Delhi. In Pune, isotopic studies, which rely on methane’s atomic makeup, point to significant landfill emissions of methane and a potential natural gas leak. “A tiered observation system, […]
In this article, the findings of selected observational studies are contrasted with that of randomised experiments conducted to estimate the impact of improved sanitation on child health in India. The estimation bias exists and could be due to the measurement error in sanitation indicators, which remained unaddressed by most observational studies. The sanitation indicators