“Hundreds of fossils representing over a dozen species of Ardipithecus, Australopithecus, and Homo had been found in the Afar ...

A rare fossil discovery in Ethiopia has pushed the known range of Paranthropus hundreds of miles farther north than ever before. The 2.6-million-year-old jaw suggests this ancient relative of humans ...

“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ornament to attract females rather than purely as a badge of status to ...

A rare Homo habilis skeleton from Kenya reveals how early humans moved, climbed, and adapted more than two million years ago.

A new study suggests humans belong in an elite “league of monogamy,” ranking closer to beavers and meerkats than to chimpanzees. By comparing full and half siblings across species and human cultures, ...

Treponema pallidum, a microorganism that can cause a deadly sexually transmitted disease in humans, may have a far more ancient lineage than scientists once thought ...

The real revelation, however, came from the men. Men considered a larger penis as an indicator of a rival with both greater ...

An ancient DNA analysis of a 5,500-year-old human skeleton reveals that an ancestor of the bacterium that causes syphilis was ...

Despite being one of the most cooperative species on the planet, humans routinely fail to manage shared resources sustainably ...

A fossil jaw of a distant human relative was discovered much farther north than previously thought possible, revealing new ...

The newly described specimen is a partial left mandible plus a molar crown, dated to about 2.6 million years ago using multiple methods, making it one of the oldest Paranthropus fossils known. The ...

Team from the Senckenberg Centre for Human Evolution and Palaeoenvironment at the University of Tübingen finds 11.6 million year old evidence of the ...