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

The question of where to place Prototaxites, the Devonian Era’s largest land species, on the tree of life appears to be ...

What did the first humans actually look like? This video traces our evolutionary story back to a tiny, squirrel-like primate that started it all. You’ll see how millions of years shaped the human face ...

Same-sex behavior is widespread in primates and may help strengthen social bonds and improve survival under challenging ...