Decrypting new diverse and massive urban data, this book shows how cities, their governments their inhabitants, their businesses , adapt deeply to all these transformations. The book is divided into six main chapters, each grouping of items within the reach of the great public by experts on urban policies, urban life, space and social structures, the economy, the functioning of cities in systems and the urban environment. The continuity of these themes with previous volumes in the series can measure the importance of the transformations that highlight how adaptation to change is more than ever the driving force for dynamics cities. Teachers, students, policy makers, urban practitioners and ordinary citizens will find keys to understanding these developments and knowingly take part in.