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

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

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 ...

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, ...

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 ...

We know that some animals are bilaterian—meaning they display bilateral symmetry—while others are not, but nature is rarely ...

A human study reveals how naturally occurring fat-derived molecules help switch off inflammation. Researchers at (UCL) have identified an important biological process that helps the body bring ...

Exclusive: Some scientists say many detections are most likely error, with one high-profile study called a ‘joke’ ...

In a proof-of-concept study funded by the National Institutes of Health, researchers from the Keck School of Medicine of USC ...