As the world rushes to reduce the negative impacts of climate change, ambitious sub-national actors are rising to the fore. The recent One Planet Summit exemplifies this trend. Earlier this month…

Prashant Kapoor, Marc Forni |

More than 1, 000 years. That’s how long recent estimates suggest it would take in some developing countries to legally register all land – due to the limited number of land surveyors in country…

Linus Pott |

Our planet is undergoing a process of rapid urbanization, and the next few decades will see unprecedented growth in urban areas, including in urban infrastructure. Most of the growth will take…

Maninder Gill, Vincent Roquet |

Cities are where most people live and most economic activity takes place.

Ellen Hamilton, Philip E. Karp, Karima Ben Bih |

Also available in: Français | Español | العربية The premise behind the Sustainable Cities photo competition was simple. [[tweetable]]We wanted to learn what people around the world “see” when they…

Xueman Wang, Dini Djalal |