Happy City is the story of how the solutions to this century's problems lie in unlocking the secrets to great city living. This is going to be the century of the city. But what actually makes a good city? Why are some cities a joy to live in? As Charles Montgomery reveals, it's not how much money your neighbours earn, or how pleasant the climate is that makes the most difference. Journeying to dozens of cities - from Atlanta to Bogota to Vancouver - he talks to the new champions of the happy city to explore the urban innovations already transforming people's lives. He meets the visionary...