The chin is one of our most familiar features, yet scientists still debate why we evolved it. Here’s a breakdown of what we ...

What makes the human brain different from that of other primates has long been a question. A new study suggests that the answer may be in a surprising twist of evolutionary fate: one of the brain’s ...

The human body is a machine whose many parts—from the microscopic details of our cells to our limbs, eyes, liver and brain—have been assembled in fits and starts over the 4 billion years of our ...

Human evolution is often told as a tidy story of adaptation, yet some of our most familiar body parts still defy straightforward explanation. From the jut of the human chin to the curve of the outer ...

Add Yahoo as a preferred source to see more of our stories on Google. The reconstructed skull of a man who died 12,000 years ago in what is now Vietnam. (photo credit: C.M. Stimpson) Researchers from ...

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