While an Earthship may sound like some kind of local UFO, it's actually an eco-friendly form of housing becoming more popular around the world.
Michael Reynolds, who designed the first the Earthship back in the '70s, envisioned a home that reduced waste and energy consumption. Typically, an Earthship's frame is constructed from reclaimed tires and an eye toward maximum energy efficiency. Reynolds' ultimate vision was to create off-grid communities of Earthships, so these homes generally rely on renewable energy rather than conventional electricity from the power grid.
These homes' construction also tends to include old bottles and tin cans that would otherwise end up in landfills. And many Earthship owners go even greener by creating indoor gardens for growing their own food. Today, in addition to single-family Earthships, there are also Earthship neighborhoods and even condo complexes.