In addition to concerns about indoor environmental quality and its affect on occupants, buildings must not adversely affect the larger environment. The construction, operation, use, and ultimate disposition of a building must have minimal adverse effects on the natural environment or ultimately http://build.net78.net  it will adversely affect people whether indoors or out. Buildings are healthy only if their effects on their occupants and the larger environment are benign. Buildings are increasingly designed or required to be “sustainable” or “green” in recent years giving the quality of the indoor environment new importance.