Do you live in a city? Well, if you don’t, you may soon. It is predicted that by 2050, more than 70 percent of us human beings will be living in cities. The urban landscape offers several advantages for sustainability, including reduced transportation emissions, more efficient water delivery, and less per-capita energy consumption. But those of us who live in cities know there are also disadvantages. Today on Sea Change Radio we speak with two innovative thinkers who are working on solutions to a couple of the problems of city living. Our first guest is Doniece Sandoval whose company Lava Mae recycles buses and transforms them into mobile showers for people who cannot access sanitation, many of whom live on our urban streets. We talk about the model, the mission, and the vision of replicating these bathroom buses in cities everywhere. Next, we dig into the archives to revisit host Alex Wise‘s discussion with Dickson Despommiers, microbiologist and vertical farming advocate. He tells us why he believes growing food in skyscrapers would conserve water and fossil fuels, and how it could become the way cities get food in the not-too-distant future.