Fossilized dung beetle balls are part of a comprehensive fossil collection project to reconstruct the habitat of Ardipithecus ramidus.
Stone tools similar to those found at prehistoric archaeological sites can be made by fracturing rocks, a technique known as flintknapping.
The floor of a rift valley is prone to periodic floods that carry in fine silt--the sedimentary matter responsible for fossil formation.
Due to the delicate nature of fossils, a hardening chemical is dripped onto every fossil before it is removed from the soil.
Ms. Pepe talks about her experiences doing field work with the Shea lab as an undergraduate at Stony Brook University.
African rift valleys were formed by the separation of tectonic plates. Water flows down to the valley floors, creating rivers and lakes.
Dr. Shea discusses his early interest in anthropology, how field work has changed over the years, and his outside interests.
Prehistoric stone tools are classified into six broad technological modes by the level of sophistication and method of fabrication.
Where and when did humans arise? What distinguishes us from other species? Did our distant ancestors look and behave like us?
How reasoning and evidence are used to understand human evolution.
Stone tools are well-preserved evidence of past human activity.
The hominid fossil record of the past six million years gives us surprising insights into the path of human evolution.
Comparing features of a 4.4-million-year-old fossil skeleton to those of human and chimpanzee skeletons sheds light on our evolutionary history.
Paleoanthropology provides an excellent example of the scientific process at work.
The poster from the 2011 Holiday Lectures on Science, Bones, Stones and Genes: The Origin of Modern Humans. It provides a unique look at the classic "tree of life" and features a timeline of various hominid fossils and their stone tool usage.
A text transcript of the 2011 Holiday Lectures on Science, Bones, Stones, and Genes: The Origin of Modern Humans.