Acclaimed author and independent scholar P. D. Smith explores what it was like to live in the first cities, how they have evolved, and why in the future, cities will play an even greater role in human life. "For the first time in the history of our planet, more than half the population-3.3 billion people-is now living in cities. City is the ultimate guidebook to our urban centers-the signature unit of human civilization. With erudite prose and carefully...