Angel's Nest-once was an earthship, now a wacked out retreat center. . .I'm not sure a hydrogen fueled stretch hummer is really the embodiment of sustainable living. According to the owner this is how 99% of Americans want to live. If that's true some how I've found myself in the 1% with grounded views on what it will take to "sustain" ourselves as a society. (this structure has 9 bathrooms! in the desert no less, and yes they catch their water, but at times have had to bring water in, no surprise there)