How can nature help us design and build our cities? Nature-based solutions have the potential to provide multiple benefits across a range of sustainability challenges facing cities. This course will explore nature-based solutions in cities in Europe and around the world. It will connect together the key themes of nature, cities and innovation. The course combines both technical knowledge and the social sciences to better understand nature-based solutions in a holistic perspective. Bringing together a collection of diverse films and key short readings on nature-based solutions as well as interactive forums and practical assignments to create an online learning community for nature-based solution in an urban world.