Will humans adapt their ways of life to conserve the natural systems upon which their future and the living world depend? There is no simple answer to the question of whether we as humans can adapt our lifestyles in the pursuit of an environmentally sound world. Inadequate information is a limiting factor, and unforeseen events make uncertainty inevitable. Even so, choices made today can narrow or expand future options. A critical task for society today is to reverse trends that narrow these options, a task in which science plays a vital role. In his thought-provoking book, Dr. Caldwell...