In England there is a building made with insulation that can be inflated or deflated to adjust to outside temperatures. The New York Times Co. building is draped in shades that automatically adjust to the movement of the sun. The point of a building is to keep its inhabitants comfortable: Humans want to be warm (but not too warm) and dry. The problem comes in providing heating or cooling, and replacing the light lost when the sun is shut out. The solutions are becoming ever more creative. To keep people comfortable and happy in a way that limits the amount of energy needed, architects and engineers are coming up with new materials, technology and approaches to building design, construction and management. Here are 10 of the most notable examples, compiled by Brendon Levitt, an architect with the San Francisco Bay area firm Loisos + Ubbelohde.












