On K2 with Kanakaredes distills a potent study of universal values from an account of a team of mountain climbersthree human and one extraterrestrialstruggling together to scale a formidable peak. Occasionally the stories can seem too consciously didactic, as in The Ninth of Av, which depends on a strained analogy between Scott's failed polar expedition and an episode of future genocide, and Orphans of the Helix, a vividly detailed but surprisingly dramaless extension of the author's landmark Hyperion/Endymion saga.