Green MetropolisBy: David Owen Look out for David Owen's next book, Where the Water Goes. A challenging, controversial, and highly readable look at our lives, our world, and our future. Most Americans think of crowded cities as ecological nightmares, as wastelands of concrete and garbage and diesel fumes and traffic jams. Yet residents of compact urban centers, Owen shows, individually consume less oil, electricity, and water than other Americans. They live in