“While conveying the geological hypotheses, techniques of data collection, and adventures of his expeditions to Greenland with his two Danish colleagues, Glassley also brings startling sensory precision to his descriptions. The velvety feeling of moss, the taste of lichen, the alternating rhythms of terror and fluidity in schools of fish through which a predatory sculpin cruises—such experiences bring what might have seemed a stark world of rock and ice alive. This delicacy of perception is the vehicle through which not only the scientific quest but also the profound mystery of our living Earth saturates this memorable book.”