Australopithecus species have been the topic of much debate in palaeoanthropology since Raymond Dart described the first species, Australopithecus africanus, in 1925. This volume synthesizes the geological and paleontological context of the species in East and South Africa; covers individual sites, such as Dikika, Hadar, Sterkfontein, and Malapa; debates the alpha taxonomy of some of the species; and addresses questions regarding the movements of the species across the continent. Additional chapters discuss the genus in terms of sexual dimorphism, diet reconstruction using microwear and isotopic methodologies, postural and locomotor behavior, and ontogeny.

For the first two thirds of our evolutionary history, we hominins were restricted to Africa. Dating from about two million years ago, hominin fossils first appear in Eurasia. This volume addresses many of the issues surrounding this initial hominin intercontinental dispersal. Why did hominins first leave Africa in the early Pleistocene and not earlier? What do we know about the adaptations of the hominins that dispersed - their diet, locomotor abilities, cultural abilities? Was there a single dispersal event or several? Was the hominin dispersal part of a broader faunal expansion of African mammals northward? What route or routes did dispersing populations take?

There are some issues in human paleontology that seem to be timeless. Most deal with the origin and early evolution of our own genus - something about which we should care. Some of these issues pertain to taxonomy and systematics. How many species of Homo were there in the Pliocene and Pleistocene? How do we identify the earliest members the genus Homo? If there is more than one Plio-Pleistocene species, how do they relate to one another, and where and when did they evolve? Other issues relate to questions about body size, proportions and the functional adaptations of the locomotor skeleton. When did the human postcranial "Bauplan" evolve, and for what reasons? What behaviors (and what behavioral limitations) can be inferred from the postcranial bones that have been attributed to Homo habilis and Homo erectus? Still other issues relate to growth, development and life history strategies, and the biological and archeological evidence for diet and behavior in early Homo. It is often argued that dietary change played an important role in the origin and early evolution of our genus, with stone tools opening up scavenging and hunting opportunities that would have added meat protein to the diet of Homo. Still other issues relate to the environmental and climatic context in which this genus evolved.

The name Leakey is synonymous with the study of human origins," wrote The New York Times. The renowned family of paleontologists,Louis Leakey, Mary Leakey, and their son Richard Leakey,has vastly expanded our understanding of human evolution. The Origin of Humankind is Richard Leakey's personal view of the development of Homo Sapiens. At the heart of his new picture of evolution is the introduction of a heretical notion: once the first apes walked upright, the evolution of modern humans became possible and perhaps inevitable. From this one evolutionary step comes all the other evolutionary refinements and distinctions that set the human race apart from the apes. In fascinating sections on how and why modern humans developed a social organization, culture, and personal behaviour, Leakey has much of interest to say about the development of art, language, and human consciousness.

Where did we come from? Where are we going?

Richard Leakey and Roger Lewin continue the pioneering field work of Louis and Mary Leakey by fitting together the pieces of our past to discover new answers to these age-old questions. The authors explore our long-buried past--from the feral roots of humanity, through the eons of time, to society today, replete with its wonders and anomalies--searcing for valuable insights into the future of modern society.

In this vast survey of human origins and evolution, Leakey and Lewin present intriguing scientific information in such a way that the general reader will be fascinated and drawn into the search.

"One of the most readable and informative boks of its kind." -- Ashley Montagu, Saturday Review

"It is a pleasure to see in print an authentic representation of what are, with only minor exceptions, the views held by most of the professionals in the field. Graced with humor, intriguing ideas, and unfamiliar insights.' -- Carl Sagan, The New York Times Book Review