Molecular evidence from a 2-million-year-old southern African hominid species indicates sex and genetic differences in P. robustus.

Thousands of fossils from the La Brea tar pits in California show no signs of mammals and birds evolving in response to ...

The new study joins the lengthy debate about when the earliest animals arose—and what evidence is necessary to confirm a fossil as an animal. Over the last several decades, the use of ...