Reducing consumption is the key principle to remember when designing sustainable architecture, says architect Peter Pfeiffer of Barley & Pfeiffer Architects in Austin, Texas.
Pfeiffer says reducting consumption of materials, water and energy are the most important elements. Energy consumption is most important because it has an impact on air pollution and global security.
According to Pfeiffer, a house or building should be designed to respond to the location's particular site and climate.
Pfeiffer talks to Alex Cohen about designing "green" buildings.