Dr. Sherwin Nuland offers a mesmerizing portrait of the tumultuous universe within the human body--the turbulence of chemistry, the seeming chaos of tissue, the volatile responsiveness of cells. And he shows how, amazingly, the stability of health rides on these tempests. But the real secret of the species' survival lies in how it has transcended mere survival. This journey is the central story of this work--how people have developed the singular quality that makes each of them unique, the human spirit. Simultaneous release from Knopf. 2 cassettes.