have you ever seen the ones partially built underground on a hillside to take advantage of the natural heating and cooling of the earth? This is one of the things that I am very inerested in. My business is making houses more efficient energy wise
i have, yes, and there's always frank lloyd wright's stuff, although that's less about energy efficiency.
i'll be going for a timber-framed number though, i suspect, unless i can get hold of any recycled stone. if i ever get round to doing it, of course.