Every time we show facial gestures, it feels effortless, but the brain is quietly coordinating an intricate performance.

Facial expression control starts in a very old part of the nervous system. In the brain stem sits the facial nucleus, which ...

When a baby smiles at you, it's almost impossible not to smile back. This spontaneous reaction to a facial expression is part ...

Humans pay enormous attention to lips during conversation, and robots have struggled badly to keep up. A new robot developed ...

Photo-Illustration by Chloe Dowling for TIME (Source Images: Klaus Vedfelt—Getty Images, Tim Robberts—Getty Images, Kelvin Murray—Getty Images, Robert Recker—Getty Images, Howard Kingsnorth—Getty ...

Today in news-that's-not-really news: Science officially confirms flirting works. (Science = a study conducted by researchers from the University of Kansas). But actually, there's more to the okay/duh ...

Whether at a birthday party in Brazil, a funeral in Kenya, or protests in Hong Kong, humans all use variations of the same facial expressions in similar social contexts, such as smiles, frowns, ...