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

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

For thousands of years, humans have selectively bred dogs to fulfill specific roles, ranging from guarding and hunting to ...

A new breakdown of earthworm DNA could help us better understand how evolution works, and it could prove Darwin completely ...

What can a tiny wasp with a rather gruesome parasitic life cycle teach us about evolution, behavior and human developmental ...

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

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

The Julurens — or “big head” people — are twisting scientists’ long-accepted understanding of human evolution.

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