This beautiful straw bale home in Texas hill country is designed to foster natural air flow and, even though it has a conventional forced-air furnace, its utility bills are modest.
"All interior exposed lumber is reclaimed longleaf/heart pine. Clerestory design allows for natural air flow when heating/cooling system is not used. All faucets/shower heads/toilets feature low-flow design." Find full information at Green Homes for Sale.