Dariush Arasteh, who holds degrees in mechanical and civil engineering, is a staff scientist in the Windows and Daylighting Group at Lawrence Berkeley National Laboratory. John Carmody, professor and director of the Center for Sustainable Building Research, University of Minnesota, has coauthored ten books, including Window Systems for High Performance Buildings.Lisa Heschong is an architect, a partner of the Heschong Mahone Group, an architectural research firm, and the author of Thermal Delight in Architecture.Stephen Selkowitz, who holds degrees in physics and environmental design, directs Windows and Daylight Research at Lawrence Berkeley National Laboratory.