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 |

A redesigned public toilet facility in Addis Ababa Photo: Rebecca Gilsdorf With a population exceeding 3 million, only 10% of Addis residents are connected to the sewerage system and an estimated…

Seema Thomas, Yitbarek Tessema Mammo, Amanuel Teshome Woldetsadik |

As the world urbanizes rapidly, [[tweetable]]international experience has shown that economic activities concentrate in a relatively small number of places[[/tweetable]] – it is estimated that…

Sameh Wahba, Judy Zheng Jia |

Editorial credit: alionabirukova / Shutterstock.com Last week, the world came to attention when the famous Hulene dumpsite in Maputo, Mozambique collapsed under heavy rains, killing at least 16…

Silpa Kaza, Lisa Yao |

This blog is co-authored with Lawrence Haddad,  Executive Director, The Global Alliance for Improved Nutrition (GAIN)Other co-authors: Beatrice Montesi, GAIN  Martin P. Gambrill, The World Bank …

Claire Chase |

Cities are becoming thirstier – a 50 percent increase in urban water demands is anticipated within the next 30 years. Rapid urban population growth, economic expansion, and competing demands are…

Lauren Nicole Core, Stephane Dahan, Richard Abdulnour, Clementine Marie Stip |

Eliminating inequality is integral to the Sustainable Development Goals , from ‘universal access’ to water, to ending poverty ‘everywhere’. Yet in a world where the politics of who gets what is…

Nathaniel Mason |

Today is World Refugee Day, a day for us all to remember how many people are moved or displaced from their homes—either within their own country or across borders. The UN High Commissioner for…

Ede Ijjasz-Vasquez, Ayat Soliman, Catalina Marulanda, Robin Mearns |

View the full infographic here For the past two years, the rains have been poor in Somalia. What comes next is tragically familiar. Dry wells. Dying livestock. Failed harvests. Migration.  Masses…

Claudia W. Sadoff, Dominick Revell de Waal, Edoardo Borgomeo |

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 |