Nature and EnvironmentBuilding eco-metropolisesTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and EnvironmentSonya Angelica Diehn06/07/2018June 7, 2018Ever more people in the world are living in urban areas. But how can we make our cities sustainable? From the dangers of air pollution to shrinking natural spaces and our carbon footprint in cities — it's high time for action.https://p.dw.com/p/2z5K4Advertisement