You don't have to be a genius: anemones have been using human genes to form their bodies for 600 million years.

Modern comforts promise ease, yet a growing body of research suggests our bodies are still tuned for a very different world. Instead of thriving, many of us are developing chronic illnesses, fertility ...

Why do humans have larger penises than other primates? New research tests attraction, rivalry, and sexual selection for ...

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 ...

This experimental study used life-sized and screen-based 3D male avatars to test how penis size, height, and body shape ...

In a proof-of-concept study funded by the National Institutes of Health, researchers from the Keck School of Medicine of USC and the California Institute of Technology (Caltech) have shown that an ...

Size matters” sounds like a tabloid cliché, but for evolutionary biologists the size of the human penis is truly a puzzle. Compared to other great apes, such as chimpanzees and go ...

Despite its importance, the heart is one of the few tissues in the human body that can't repair damage very well – or at ...

Men assess potential rivals that have a larger penis as more of a threat, both physically and sexually, according to a study by Upama Aich at the University of Western Australia and colleagues, ...