Just days after a British climber was left to die near Mount Everest's summit, an American guide abandoned his second bid to stand on top of the world so he could rescue a mountaineer mistakenly given up for dead. Not only did Daniel Mazur not scale the world's highest peak from the northern side, he also failed to get his two paying clients to the top. "It was very disappointing for me to miss my chance at the summit, but even more that I could not get my job done," Mazur, of Olympia, Wash., told The Associated Press upon returning...