Imagine seeing your body from the inside out, a hidden world where more than 30 trillion cells are constantly renewing and regenerating to keep you alive. Men typically have around 36 trillion cells, ...

Molecular evidence from a 2-million-year-old southern African hominid species indicates sex and genetic differences in P. robustus.

You've probably heard the claim that it takes more muscles to frown than to smile. It's usually framed as a feel-good reason ...

Scientists observed chimpanzees in Uganda appearing to clean and treat both their own wounds and those of others. Scientists studying chimpanzees in the Budongo Forest of Uganda have found that these ...

The sometimes uncomfortable sensations we feel in our teeth may be an evolutionary holdover from the scaly exteriors of ...