This is perhaps one of the most comprehensive treatments of this now broad subject area that I have ever read. The authors are to be applauded for gathering together some of the foremost experts in this field of study and organizing a diverse group of papers into a volume that is not only eminently readable by scientists and laypeople alike, but will also certainly stand as one of the outstanding volumes in biological anthropology for years to come. Professionals, students, and laypeople alike will all find something thought-provoking in this book. Very Highly Recommended.