Scientists have documented the way a single gene in the bacterium that causes bubonic plague, Yersinia pestis, allowed it to survive hundreds of years by adjusting its virulence and the length of time ...

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

A cutting-edge technique for analyzing fossil tooth enamel is revealing remarkable new information about 2 million-year-old ...