After decades of unchecked sprawl, more people than ever are moving back to the city. Dense urban living has been prescribed as a panacea for the environmental and resource crises of our time. But is it better or worse for our happiness? Are subways, sidewalks and tower dwelling an improvement on the car-dependence of sprawl? In his book Happy City: Transforming Our Lives Through Urban Design, Charles Montgomery finds answers to such questions at the intersection between urban design and the emerging science of happiness, during an exhilarating journey through some of the world’s most dynamic cities.