Sheri Koones has created an incredible book called Prefabulous World: Energy-Efficient And Sustainable Homes Around The Globe ($25). The book shows you the varying options available for energy-efficient homes. The book features fifty homes in such places as Australia, New Zealand, Japan, Canada, and the United States. Each home is represented by multiple images of its interior and exterior, plus a listing of its architect, builder, and suppliers. If you’re thinking about a pre-fab home or even a prefab addition for your current home, this would be a great book to have.