Human evolution is often told as a tidy story of adaptation, yet some of our most familiar body parts still defy straightforward explanation. From the jut of the human chin to the curve of the outer ...

The human body is a machine whose many parts – from the microscopic details of our cells to our limbs, eyes, liver and brain – have been assembled in fits and starts over the four billion years of our ...

"Size matters" sounds like a tabloid cliché, but for evolutionary biologists the size of the human penis is truly a puzzle.

“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ...

Cat Bohannon's "Eve" is vaguely intimidating. Fine, more than a little intimidating. It's more than 600 pages, promising to cover 200 million years of human evolution. The young adult adaptation, just ...

Hobbits of Flores evolved to be small by slowing down growth during childhood, new research on teeth and brain size suggests. When you purchase through links on our site, we may earn an affiliate ...

Modern humans, Neanderthals, and other recent relatives on our human family tree evolved bigger brains much more rapidly than earlier species, a new study of human brain evolution has found. The study ...

In the technical description, the authors emphasize that the skeleton includes clavicle and shoulder-blade fragments, both upper arms, both forearms, plus part of the sacrum and hip bones - rare ...

Since the Middle Ages, the size of wild and domestic animals has largely been shaped by human selection: domestic animals are increasingly larger; wild animals increasingly smaller. During the 7,000 ...