Inequality around the world is rising. Managing water resources lies at the center of the challenge—if we can manage water more equitably, we'll improve livelihoods and opportunities around the world.
Green infrastructure like forests, wetlands and coral reefs can help traditional “gray infrastructure” perform better. Yet, green-gray infrastructure projects remain relatively niche, mainly because of persistent myths about their costs and feasibility.
Medellin used to be the murder capital of the world. Today, new businesses, plazas, libraries and schools can be seen throughout the city's hillside neighborhoods. An aerial tram system is at the heart of Medellin's transformation.