Earthship n. 1. passive solar home made of natural             and recycled materials 2. thermal mass construction for      temperature        stabilization. 3. renewable energy & integrated      water systems    make     the Earthship an off-grid home with little   to    no utility  bills.
Biotecture n. 1. the profession of designing            buildings and  environments with consideration for their    sustainability.         2. A  combination of biology and architecture.