BLDGBLOG: Remnants of the BiospherePhotographer Noah Sheldon got in touch the other week with a beautiful series of photos documenting the decrepit state of Biosphere 2, a semi-derelict bio-architectural experiment in the Arizona desert. [Image: Biosphere 2, photographed by Noah Sheldon]. The largest sealed environment ever created, constructed at a cost of $200 million, and now falling somewhere between David Gissen's idea of subn
