The USGBC developed the LEED certification process to (i) evaluate the environmental performance from a wholebuilding perspective over a building’s life cycle, (ii) provide a definitive standard for what constitutes a “green building,” (iii) enhance environmental awareness among architects and building contractors, and (iv) encourage the design and construction of energy-efficient, water-conserving buildings that use sustainable or green resources and materials (see www.usgbc.org for more information).