Ten years ago, National Geographic photographer Joel Sartore made it his life's work to capture pictures of the twelve thousand species of animals in human captivity. So far, he's photographed six thousand. The Photo Ark showcases only a fraction of those images, but it's still breathtaking in its scope and beauty. With a foreword by Harrison Ford (yes, that Harrison Ford), this 10"-square tome features brilliant color photographs of hundreds of creatures, from the tiny St. Andrew beach mouse to the mammoth African elephant. Explore the pages of this impressive collection and come face-to-face with some of the world's most intriguing - and irreplaceable - wildlife. (SM)