Human testicles are much smaller, in proportion, to some of our primate cousins. Evolution can tell us why. But the size of ...

South Africa has one of the world's richest fossil records of hominins (humans and their fossil ancestors). But many ...

A new DNA model suggests humans didn't reach Australia until 50,000 years ago, but archaeological data disagrees.

Discover interesting facts about the origin of the human species and what makes us different from our ape cousins.

New research suggests that the unique way human placentas produce sex hormones during pregnancy may have been a key driver ...

The study questions the long-held belief that northern Africa became arid around 3 million years ago, which coincides with ...

Humans change the urban landscape with religious, cultural and political activities, which in turn can influence the ...

Recent discoveries using lab-grown brain organoids, or "mini-brains," suggest that testosterone increases brain size while ...

"Evolution is part deterministic—there are rules for how systems evolve—and part random—mutations and environmental changes are primarily unpredictable," Thomas Mailund, an associate ...

The placenta and the hormones it produces may have played a crucial role in the evolution of the human brain, while also ...