Edward Glaeser explains in simple terms the synergies between dense, diverse cities and dynamic labour markets.
Richard Florida discusses spatial variations within the USA in terms of homeownserhip. This is a debate that matters in other countries as well, such as the UK. A very interesting fact is cited right at the beggining: "Yale University's Robert Shiller, the world's leading student of bubbles, housing, and otherwise, found that from "1890 to 1990, the rate of return on residential real estate was just about zero after inflation." Makes you think twice about buying a house!