We take an average of 7.5 million breaths a year and some 600 million in our lifetime, and what goes on in our body each time oxygen is taken in and carbon dioxide expelled is nothing short of miraculous. "Our lungs are the lynchpin between our bodies and the outside world," writes Dr. Michael Stephen. And yet, we take our lungs for granted until we're incapacitated and suddenly confronted with their vital importance.In Breath Taking, pulmonologist Michael Stephen takes us on a journey to shed original and much-needed light on our neglected and extraordinary lungs, at a most critical societal moment. He relates the history of oxygen on Earth and the evolutionary origins of breathing, and explores the healing power of breath and its spiritual potential. He explains in lay terms the links our lungs have with our immune system and with society at large. And he offers illuminating chronicles of pulmonary research and discovery-from Galen in the ancient world to...