Ancient cities, like Mohenjodaro in modern-day Pakistan, emerged relatively recently in human history (photo courtesy of Saqib Qayyum used through a Creative Commons license.)​ The growth of large…

Chandan Deuskar |

Can prepaid systems become an instrument to improve access and quality of water services to poor people in African cities and towns? Or does prepayment deny poor people more access to water? Do…

Chris Heymans, Kathy Eales |

Up until recently, if someone asked us what the most important benefits of solid waste management were, we would have said improving public health, reducing greenhouse gas emissions, or helping…

Silpa Kaza, Farouk Banna |