"I am a Climber, and an Incidental Photographer," writes Ed Viesturs at the start of this stunning expedition to the highest peaks on Earth -- but as the pages that follow prove again and again, his photographs offer a vivid and unique record of a world where few people and fewer cameras ever go. There are fourteen summits on the planet higher than 8,000 meters, and Ed Viesturs has stood on twelve of them, on some more than once. What's more, he's...