The benefits of good health to individuals and to society are strongly positive and improving the health of the poor is a key Millennium Development Goal. A typical health strategy advocated by some is increased public spending on health targeted to favor the poor and backed by foreign...

Mega urban regions are not a passing phenomenon. They are likely to persist and to enlarge their economic footprints because they benefit from the advantages of market scale, agglomeration economies, location, and the increasing concentration of talented workers. Metropolitan regions which are...

Extension services are a keystone of information diffusion in agriculture. This paper exploits a large randomized controlled trial to track diffusion of a new technique in the classic Training and Visit (T&V) extension model, relative to a more direct training model. In both control and...

This paper analyzes the level and trends in inequality of opportunity among Egyptian children during the 2000s. The analysis uses severall tools, including comparison of the distributions of early risks and outcomes across circumstance groups; estimation of the human opportunity index;...

Although child mortality rates have declined all across the developing world over the past 40 years, they have declined the most in the Middle East and North Africa region. This paper documents this remarkable experience and shows that it is broad based in the sense that all countries in the...

Female labor participation in the Arab world is low compared with the level of economic development of Arab countries. Beyond anecdotal evidence and cross-country studies, there is little evidence on what could explain this phenomenon. This paper uses the richest set of panel data available for...

An accurate measurement of HIV incidence is a key for policy makers and HIV program managers directing national HIV response. However, there is no perfect method to measure or estimate the rate at which new HIV infections occur in a population. This review compiles and triangulates longitudinal...

Using bilateral migration flow data from the 2010 population census of Nepal, this paper provides evidence on the importance of public infrastructure and services in determining migration flows. The empirical specification, based on a generalized nested logit model, corrects for the non-random...

This paper develops a dynamic model that explains the pattern of population and production allocation in an economy with an urban location and a rural one. Agglomeration economies make urban dwellers benefit from a larger population living in the city and urban firms become more productive when...

International migration offers individuals and their families the potential to experience immediate and large gains in their incomes, and offers a large number of other positive benefits to the sending communities and countries. However, there are also concerns about potential costs of...