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Researchers contend that neighboring communities of wild chimpanzees develop distinctive styles of mutual grooming to identify fellow group members and foster social solidarity.
A fossil analysis indicates that, by about 100,000 years ago, modern humans in the Middle East had hands suited to holding stone tools by attached handles, whereas Neandertals did not.
A new book raises troubling and controversial issues regarding research on a famous South American Indian population.
Incisions on ancient bone implements found in South Africa indicate that human ancestors gathered termites, a protein-rich food source, more than 1 million years ago.
Ancient mitochondrial DNA extracted from Homo sapiens fossils and anatomical links among H. sapiens crania from different regions both support a theory of geographically diverse human origins.
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