"China has experienced a wide-scale and rapid transformation from an agricultural based economy to the manufacturing workshop of the world. The associated relocation of the population from relatively low density rural areas to very high density urban areas is having a significant impact on the...

"In the early 2000s, the Government of Sri Lanka considered engaging private sector operators to manage water and sewerage services in two separate service areas: one in the town of Negombo (north of Colombo), and one stretching along the coastal strip (south from Colombo) from the towns of...

"The authors show how willingness to pay surveys can be used to gauge household demand for improved network water and sanitation services. They do this by presenting a case-study from Sri Lanka, where they surveyed approximately 1,800 households in 2003. Using multivariate regression, they show...

"How can the impact of aid be estimated in the presence of fungibility? And how far does fungibility reduce its benefits? These questions are analyzed in a context where a donor wants to target its efforts on a specific sector and specific geographic areas. A traditional...

"The authors investigate the impact of international migration on child health outcomes in rural Mexico using a nationally representative demographic survey. They use historic migration networks as instruments for current household migration to the United States in order to correct for the...