Bellies full of huevos rancheros and sopapillas, we leave the greasy spoon and pile back into the minivan. Our next stop is Earthships Taos, completely sustainable and eco-friendly homes intended to minimize if not eliminate man's dependence on local utilities and fossil fuels. We pay the admittance fee and take a very short self-guided tour through the magnificent structure made for the public. Most of the science and intriguing machinery which keeps the place running is kept behind closed doors with polite “Staff Only” signs. We exit and find a few houses in various stages of being built and put on our best impressions of “politely-curious tourists” to sneak a bit closer. Rammed-earth walls dense with balding tires and aluminum cans stacked in haphazard patterns seem to be the building material of choice in most of the structures. Trash sits in neatly organized piles waiting to have its purpose recognized.