Every step you take depends on a structure most people rarely think about. The pelvis sits at the center of the body and ...

The human body is a machine whose many parts – from the microscopic details of our cells to our limbs, eyes, liver and brain ...

A large comparative study of primate teeth shows that grooves once linked to ancient human tooth-picking can form naturally, while some common modern dental problems appear uniquely human.

BUFFALO, N.Y. ­­ ­ ­­— Saliva is a bodily fluid most of us take for granted despite the significant roles it plays: aiding in digestion, maintaining strong teeth and defending against oral disease.

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

A new study comparing 59 species of primates linked same-sex sexual behavior to scarce resources and more predators in socially complex species. The findings show diverse sexual behaviors are common — ...

Scientists have long suspected that the trillions of microbes in our intestines do more than digest lunch, but new work goes much further, showing that human gut bacteria can push mouse brains to ...

These papers were first presented as a symposium at the annual meeting of the American Association for the Advancement of Science, Boston, Dec. 27, 1953. They were published in the Sept. 1954 issue of ...