From avalanches to glaciers, from seals to snowflakes, and from Shackleton's expedition to "The Year Without Summer," Bill Streever journeys through history, myth, geography, and ecology in a year-long search for cold --- real, icy, 40-below cold. In July he finds it while taking a dip in a 35-degree Arctic swimming hole; in September while excavating our planet's ancient and not so ancient ice ages; and in October while exploring hibernation habits in animals, from humans to wood frogs to bears.

A scientist whose passion for cold runs red hot, Streever is a wondrous guide: he conjures woolly mammoth carcasses and the ice-age tribe from melting glaciers, and he evokes blizzards so wild readers may freeze --- limb by vicarious limb.