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. However, the evolution of ...

Biologists group animals with similar traits into broad categories called orders. Despite their similarities, animal species in the same order can have very different average lifespans. One of the ...

Here's something that'll make your next giggle session feel a bit weird: scientists genuinely can't figure out if your laughter evolved from joyful chimp panting or from the threatening bared-teeth ...

Compared to other primates, humans have evolved dramatic changes to cognitive and social behaviors. However, little is known about the molecular, cellular and circuit-level modifications in the human ...

UNLV Anthropology Professor Brian Villmoare and a team of scientists discovered fossilized teeth. UNLV Anthropology Professor Brian Villmoare and a team of international scientists discovered ...

Same-sex sexual behaviour (SSB) is widespread across animal species; however, its evolutionary origins and ecological underpinnings remain poorly understood. In social animals, SSB is probably shaped ...

Hidden beneath the scorched expanse of the central Libyan Sahara lies a prehistoric graveyard that was once a lush, green gateway to a continent. For decades, the origin of Africa's higher primates ...

Tiny, tooth-sized fossils have just reshaped the story of our deepest ancestry. Paleontologists have discovered the southernmost remains ever found of Purgatorius—the earliest-known relative of all ...