Photo: The central square of the old town. Brasov. Transylvania. By Ann Stryzhekin/ Shutterstock When U.S. Commodore Matthew Perry arrived in Yokohama in 1854, it was a backwater village in Japan…

Marcel Ionescu-Heroiu, Yuko Okazawa |

Also available in: Español | 日本語  Picture of the Competitive Cities Technical Deep Dive participants enjoying a walk through the Minato Mirai 21 area (with the Cosmo Clock in the background),…

Sameh Wahba, Megha Mukim, Daniel Levine |

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 |

​Today, a quarter of the world’s population lives in urban “agglomerations”—supersized metropolitan areas that cut across jurisdictional boundaries and bring together one or more cities along with…

Ede Ijjasz-Vasquez, Philip E. Karp, Maria Angelica Sotomayor |

About this series More blog posts Rapid urbanization has put considerable pressure on developing countries to deliver more infrastructure - and, preferably, to deliver it fast and in a cost-…

Ede Ijjasz-Vasquez, Philip E. Karp |

  When we think of urban expansion in the 21st century, we often think of ‘sprawl’, a term that calls to mind low-density, car-oriented suburban growth, perhaps made up of single-family homes.…

Chandan Deuskar |