As the world becomes increasingly urbanized, the number of megacities is growing rapidly. Today there are 37 cities worldwide with populations of greater than 10 million, and 84 with populations…

Philip E. Karp, Peter Ellis, Barjor Mehta |

Entering data. Photo: World Bank In the fiscal transparency arena, people often hear two conflicting claims. First, governments complain that few people take advantage of fiscal information that…

Paolo de Renzio, Massimo Mastruzzi |

Watch Video I was in Vietnam last month and I was so impressed by the tremendous progress the country has made compared to what I had seen 17 years earlier. In 2000, the Nhieu Loc–Thi Nghe canal…

Kristalina Georgieva |

This satellite image shows Sao Paolo's estimated “urban areas” based on a WorldPop gridded population layer. Areas in yellow are areas with at least 300 people per km2 and a known settlement…

David Mason |

Globally 2.9 million people died from household air pollution in 2015, caused by cooking over foul, smoky fires from solid fuels such as wood, charcoal, coal, animal dung, and agricultural crop…

Ernesto Sanchez-Triana, Bjorn Klavdy Larsen |

Those who have tried toilet training a pet dog or cat know that it is a difficult proposition. How about toilet training a flock of 30 chickens? “Why would I want to?” Because in poor countries,…

Derek Headey |

Most of us in the development community are aware that proper water and sanitation services are crucial for life and health. Proper sanitation especially can decrease the instances and spread of…

Jaehyang So |

Image credit: CPI at Flickr under a Creative Commons license.

Claudia Gabarain |