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 |

Also available in: Español Photo: Andy Shuai Liu/World Bank Invented over a century ago for exploring mountainous regions, aerial cable cars have recently made an appearance in several big cities…

Leonardo Canon Rubiano, Wenyu Jia, Georges Darido |

The buzz around satellite imagery over the past few years has grown increasingly loud. Google Earth, drones, and microsatellites have grabbed headlines and slashed price tags. Urban planners are…

Sarah Elizabeth Antos, Nancy Lozano Gracia, Ana I. Aguilera |

In the previous blog, we discussed how remote sensing techniques could be used to map and inform policymaking in secondary cities, with a practical application in 10 Central American cities. In…

Sarah Elizabeth Antos, Nancy Lozano Gracia, Ana I. Aguilera |

Countries are facing increasingly frequent negative impacts from adverse natural events. Central America, a region prone and vulnerable to disasters, is a clear example. Just from 1992 to 2011,…

Oscar A. Ishizawa, Juan Jose Miranda |

Photo: Sinkdd/Flickr For many countries, damages and losses related to transport are a significant proportion of the economic impacts of disasters, often more than destruction to housing and…

Shanika Hettige, Shoko Takemoto, Robert Lucas |

[[tweetable]]When it comes to responding to disasters, time is of the essence.[[/tweetable]] Help needs to come immediately to save lives; recovery and reconstruction have to start swiftly to…

Zuzana Stanton-Geddes, Jolanta Kryspin-Watson |

Also available in: Français Photo: Anthony Doudt/Flickr Bridges are critical links in the transport network. In their position across waterways, they are exposed to the full effects of flooding…

Oliver Whalley |