[[tweetable]]How fast is your city growing? The answer may depend on where you live.[[/tweetable]] There are the booming megacities such as Tokyo, Mumbai, and Nairobi. Then there are cities that…

Ede Ijjasz-Vasquez, Paula Restrepo Cadavid |

Eugenia enjoying a music lesson together with preschool children in the Bulgarian village of Litakovo. (Photo: Daniel Lekov / World Bank)
In Bulgaria, where just 15 percent of Roma children…

Daphna Berman |

Beside the great Lake Kivu, beneath the shadow of an enormous volcano, the Rwanda-DRC border divides the neighboring cities of Gisenyi and Goma. As the day begins, the predominant impression is…

Kavita Watsa |