The new evolutionary study found two main reasons for the primate anomaly: to attract mates and to threaten rivals.

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

If we look across the whole of the mammal branch of the tree of life, we find there are many groups of mammals that have ...

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

New research finds the human brain has a built-in pain map that activates in different areas when relieving face, arm or leg pain. But placebo pain relief only works where the brain expects it.