Nature and EnvironmentThe boom in megacitiesTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and Environment10/21/2021October 21, 2021As the world's sprawling megacities continue to grow, so do the problems facing their populations. The metropolises need new concepts for mobility, sustainability, and urban planning — sooner rather than later.https://p.dw.com/p/3slCbAdvertisement