A fully up-to-date account of the evidence relating to the Middle Stone Age in Nigeria and the other countries of West Africa, based upon the author’s own fieldwork and extensive personal knowledge of the region and its archaeology.

This fascinating volume, assessing Lower and Middle Pleistocene African prehistory, argues that the onset of the Middle Stone Age marks the origins of landscape use patterns resembling those of modern human foragers. Inaugurating a paradigm shift in our understanding of modern human behavior, Grant McCall argues that this transition—related to the origins of “home base” residential site use—occurred in mosaic fashion over the course of hundreds of thousands of years. He concludes by proposing a model of brain evolution driven by increasing subsistence diversity and intensity against the backdrop of larger populations and Pleistocene environmental unpredictability. McCall argues that human brain size did not arise to support the complex patterns of social behavior that pervade our lives today, but instead large human brains were co-opted for these purposes relatively late in prehistory, accounting for the striking archaeological record of the Upper Pleistocene.

The hominin fossil record documents a history of critical evolutionary events that have ultimately shaped and defined what it means to be human, including the origins of bipedalism; the emergence of our genus Homo; the first use of stone tools; increases in brain size; and the emergence of Homo sapiens, tools, and culture. The Earth's geological record suggests that some evolutionary events were coincident with substantial changes in African and Eurasian climate, raising the possibility that critical junctures in human evolution and behavioral development may have been affected by the environmental characteristics of the areas where hominins evolved. Understanding Climate's Change on Human Evolution explores the opportunities of using scientific research to improve our understanding of how climate may have helped shape our species. Improved climate records for specific regions will be required before it is possible to evaluate how critical resources for hominins, especially water and vegetation, would have been distributed on the landscape during key intervals of hominin history. Existing records contain substantial temporal gaps. The book's initiatives are presented in two major research themes: first, determining the impacts of climate change and climate variability on human evolution and dispersal; and second, integrating climate modeling, environmental records, and biotic responses. Understanding Climate's Change on Human Evolution suggests a new scientific program for international climate and human evolution studies that involve an exploration initiative to locate new fossil sites and to broaden the geographic and temporal sampling of the fossil and archeological record; a comprehensive and integrative scientific drilling program in lakes, lake bed outcrops, and ocean basins surrounding the regions where hominins evolved and a major investment in climate modeling experiments for key time intervals and regions that are critical to understanding human evolution.

International archaeologists examine early Stone Age tools and bones to present the most holistic view to date of the archaeology of human origins.

A comprehensive account of hominin fossil sites across Africa, including the environmental and ecological evidence central to our understanding of human evolution.