New York Times: New York has been a dirty, gritty city practically forever, but it has also had farsighted leaders who qualify as green visionaries, going back to the 19th century. They preserved valuable real estate as irreplaceable public parkland; dreamed up an astonishing system of aqueducts to carry clean mountain water, unpumped and unfiltered, to city taps; and built a walkable, ridable, electric-train metropolis generations before smart growth and transit-oriented development were buzzwords. The latest...