Another location for Reynolds’s “Earthships” is near Phoenix, Arizona. Similar to many of the other buildings. It is built in a remote area where very few other architects would venture. However, Reynolds choses to rely on architecture to provide a livable environment rather than traditional natural resources, such as a river. Besides the thermal wrap of being built against a hill, this is partially due to the use of the sealed glass bottles in the wall. Since there is no air flow, dead air space cannot heat up or cool down. This is similar to the design of new coolers and cups such as Yeti.