Betsy Pettit, M.Arch, FAIA, is the president of Building Science Corporation and is a registered architect with over 35 years of professional experience in the design and renovation of residential, commercial, and institutional buildings. With a particular passion for and commitment to environmentally responsible design, Ms. Pettit managed Building Science Corporation’s role in the Department of Energy’s Building America project for the past twenty years, which has involved the design of over 2,000 high performance houses throughout the United States.