I believe the sustainable discussion and impetus is aboutvalue. And, what’s valuable in life? Life itself. Next, is theability to sustain life, and ways to enhance life, and so on. Icall these items the value rings, with life as the bull’s-eye. Andyet, our buildings as we’ve made them for the past centuryhave contributed to problems with our continued ability to sustainlife: poor air quality, global warming, water contaminationand elimination of precious limited resources.