The textbook on what archaeologists do and how they do it - completely revised and redesigned.For the Fourth Edition, new theoretical approaches, such as agency, materiality, and engagement theory, are added and earlier approaches analyzed afresh. Field methods and scientific techniques have been updated throughout, and new emphasis is placed on climate change and its impact on human affairs. The latest information on topics as varied as the Iceman, Pleistocene extinctions, and llama domestication is included, along with the most up-to-date material on GIS and surveying technology. New topics will be introduced to emphasize the ever-changing face of modern archaeology, and additional special box features will be included, as well as discussion of the archaeological techniques needed to study the material culture of the twentieth and twenty-first centuries. A key component of the new edition will be the introduction of a dedicated Web site and study guide to accompany the textbook itself. Over 600 illustrations.