As one of our closest biological relatives, some primates can appear eerily similar to humans. But our different interpretations of facial expressions can be a misunderstanding capable of endangering ...

Imagine watching a video of a chimpanzee. The ape pulls its lips back in a wide, playful grin. Without realizing it, the corners of your own mouth twitch upward. You smile back. Scientists call this ...

Facial expressions arise from brain networks that encode slow, context-rich meaning and fast muscle control on different time scales, keeping smiles and threats socially precise.

Add Yahoo as a preferred source to see more of our stories on Google. You prepared thoroughly for a presentation at work, and now you’re dropping wisdom to a packed room. Much as you expected, your ...

If you were to travel anywhere in the globe -- even to visit remote tribes who have scant contact with the larger world -- would people be able to read your emotions from your facial expressions ...