Aerial rendering of SF (left) and Yerba Buena/Planned TI Development (right) via Skidmore, Owings + Merrill

The SF Board of Supes recently gave the go-ahead to a billion dollar plan to redevelop Treasure Island, a flat and wind-scoured artificial island built from fill in the 1930s. Envisioned as a a “green utopia”, there are serious doubts as to how sustainable a 19,000 inhabitant island community can be, considering it will be built on toxic weapons dumps and accessible mainly by car. Read more in my recent Inhabitat post, with architects renderings.