Research from the Barna Group demonstrates that major portions of the generations younger than 40 look at evangelical Christianity and reject what they see. The reasons for that, along with a prescription for change, are found in the new book unChristian (Baker Books) by Dave Kinnaman and Gabe Lyons. These two insightful young church leaders also have included comments from a diverse group of church leaders (from Rick Warren to John Stott to Brian McLaren). Like it or not, this is an important book that church leaders should read. (For additional resources visit UnChristian.com.)