In 1929, archaeologists discovered the 140,000-year-old skeleton of a young girl in Skhūl Cave. The researchers believed her ...

The human body is a machine whose many parts – from ... but it only works if the feature in question has evolved more than once on separate branches of the tree of life. This repeated evolution is ...

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

The human chin has been fertile ground for arguments between scientists over its purpose. As with testicles, there are half a dozen plausible ideas to explain the evolution of the human chin.

It's not easy to look at a sea spider and see an animal so representative of its kind that it may help scientists sort out ...

Past the agricultural revolution, there’s something of a sea-change in how dogs are found in the archaeological record. They ...

One hundred years ago, the small town of Dayton, Tenn., became the unlikely stage for one of the most sensational trials in ...