Also available in: Français | Español  | 中文 Poverty is a complex concept. A widespread view argues that important aspects of poverty cannot be measured in monetary terms – in fact, to successfully…

Daniel Mahler, Jed Friedman, Maria Ana Lugo, Dhiraj Sharma |

Robert Allen’s recent AER paper on “Absolute Poverty: When Necessity Displaces Desire” is a fascinating read, on many levels. The paper uses linear programming (LP) to compute (four variants of)…

Francisco Ferreira |

This year’s global poverty update from the World Bank is a minor one. Until reference year 2008, the World Bank published new poverty estimates every three years, and between 2010 and 2013 we…

Francisco Ferreira, Christoph Lakner, Carolina Sánchez-Páramo |

Urban population in Africa will double within the next 25 years and reach 1 billion people by 2040, but concentration of people in cities has not been accompanied by economic density. Typical…

Ede Ijjasz-Vasquez, Somik Lall |

World Bank researchers have been trying to assess the extent of extreme poverty across the world since 1979 and more systematically since the World Development Report 1990, which introduced the…

Francisco Ferreira, Dean Mitchell Jolliffe, Espen Beer Prydz |

Do migrants respond to differences in access to public goods and services in addition to income prospects of potential destinations?  This issue is important in developing countries where…

Forhad Shilpi |

The world economy faces huge infrastructure financing needs that are not being matched on the supply side. Emerging market economies, in particular, have had to deal with international long-term…

Otaviano Canuto |

Under-investment in infrastructure can cripple lives. Across the world, 1.3 billion people have no access to electricity, 2.5 billion do not have adequate sanitation, and a further 2.5 billion…

Jonathan Woetzel |

Traffic congestion, air pollution, accidents – the negative externalities from car transport are not just a popular field of economic research, but also a daily arduous reality for millions of…

Stéphane Hallegatte, Jun Erik Rentschler, Paolo Avner |

A fascinating feature of purchasing power parity (PPP) is more people hold an opinion on it than know what it means. This was in ample display last week, when the Global Office of the…

Kaushik Basu |