Shaped by wind, heat and the etchings of rare water, the deserts of the American West are at the heart of Williams's numerous writings on the need to preserve wilderness (Leap; Refuge). This new collection of writings (some of which have been published before) is inspired by her daily experiences with the Southwestern desert, Anasazi petroglyphs and small shifts in time at her home outside Moab, Utah. Contributing to the movement to protect these fragile landscapes, she encourages her readers to consider the desert as a threatened national commons, drawing in the life around her to express just how the desert inhabits her and makes her more human. Included here are two of the works that have defined Williams as a central voice in the environmental movement: "Desert Quartet," which is made up of simple and erotic personal essays, and "Coyote's Canyon," comprised of the lovely tales of desert people. To these she adds pieces that center on her move out of Salt Lake City, her study of the meanings of the color red and, most importantly, the imperative to create national protection for land that cannot protect itself from each step of development and population growth. Although there are repetitions between the sections and at times Williams sounds desperate, the collection resonates with an inspiring and convincing devotion that cannot be set aside. (Sept. 19.)