Until a vaccine is widely available, face masks and other nonpharmaceutical interventions (NPIs) will continue to be the frontline defense against Covid-19 in developing countries. But their effectiveness depends critically on compliance by young adults, who are most likely both to become...

Ambient air pollution is a leading cause of death in developing countries. In theory, using smartphone apps, text messages, and other personal information and communication technologies to disseminate real-time information about such pollution can boost avoidance behavior like wearing face masks...

In cities around the world, Covid-19 lockdowns have improved outdoor air quality, in some cases dramatically. Even if only temporary, these improvements could have longer-lasting effects on policy by making chronic air pollution more salient and boosting political pressure for change. To that...

Ambient air pollution is a leading cause of death in developing countries. In theory, using smartphone apps, text messages, and other personal information and communication technologies to disseminate real-time information about such pollution can boost avoidance behavior like wearing face masks...

We conduct a discrete choice experiment with leaders of a random sample of 164 Peruvian indigenous communities (ICs) - to our knowledge, the first use of rigorous stated preference methods to analyze land titling. We find that: (i) on average, IC leaders are willing to pay US$35,000-45,000 for a...

The ability of countries in Latin America to achieve net zero greenhouse gas (GHG) emissions by mid-century, the target set by the Paris Agreement, will depend critically on citizen support. To gauge this support, we administered a contingent valuation survey to representative samples in seven...

What is the best way to improve access and learning outcomes for girls This review brings together evidence from 267 educational interventions in 54 low- and middle-income countries - regardless of whether the interventions specifically target girls - and identifies their impacts on girls. To...

Over the past 15 years, Brazil has introduced a consistent program of reforms of its education system, progressively aligning the educational attainment of its labor force with that of other middle income countries and introducing advanced student assessment and monitoring systems

The rationale and evidence of the effectiveness of investing early in children is compelling: early childhood is the most rapid period of development in a human life, with incredible brain development occurring (85 percent of the brain is wired by age 5). Investments in Early Childhood...