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

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 ...

Cats have 276 distinct facial expressions, a discovery that turns on its head the popular belief that our pet felines are aloof and just not that into us. In fact, cats likely evolved these various ...

Facial expressions play a fundamental role in social communication. While it is well established that others’ expressions influence our behavior—such as approaching a smiling person or avoiding an ...

Researchers used an algorithm to allow people to refine what they thought the facial expression of a particular emotion should look like. The results show profound individual differences, suggesting ...

When I started horse riding lessons at the age of eight, I was told that if a horse had its ears forward that was a good sign, and if horse had its ears back it wasn’t happy. Those riding lessons ...