ABSTRACT
Our changing environment has increased the complexity of urban phenomena and the environment we inhabit. This means that urban planners are increasingly confronted with the challenge of how to deal with polycrisis: that is, a nested set of social, economic and environmental crises. That can take the form of rapid urbanization; shrinking and ageing cities; climate change and related disasters; sprawl and peri-urbanization, ecological overshots, poverty and informality among others (UN-Habitat 2009).
