The award-winning teachers and authors continue to share their love of discovery with students in this balanced, objective introduction to physical anthropology that does not assume that students have any previous knowledge of the subject. Carefully streamlined, making it more accessible and affordable, this ninth edition provides students with a pedagogical program designed to facilitate comprehension. Every concept is carefully explained and illustrated, guiding students step-by-step through difficult material. As always, Stein and Rowe use the most current data to unravel the mystery of the evolution of humankind, and to examine the dynamic relationship between humans and their environment.