In this book, Professor Goldin and Tom Lee-Devlin show why making our societies fairer, more cohesive and sustainable must start with our cities. Globalization and technological change have concentrated wealth into a small number of booming metropolises, leaving many smaller cities and towns behind and feeding populist resentment. Yet even within seemingly thriving cities like London or San Francisco, the gap between the haves and have-nots continues to widen and our retreat into online worlds tears away at our social fabric. Meanwhile, pandemics and climate change pose existential threats to our increasingly urban world.