Many people don’t realize that there are various health reasons why someone might feel uncomfortable showing their teeth when ...

We usually think of smiles as a reaction to feeling happy. But there are several reasons to make the effort to smile, even when you don’t feel like it.

Researchers flashed an array of images of the same people either smiling, neutral-faced or looking surprised to a group of 40 participants and found that they perceived the surprised faces to look ...

Even if science doesn't agree that animals can smile, animal lovers everywhere know it's true! Snickers is an adorable Calico cat who always looks like he's smiling.

It turned out that the people in the study were most likely to underestimate the age of a person when looking at him/her smiling. What explains a smile's apparent age-defying effect?

People in Japan who have become accustomed to wearing a face mask have turned to the help of a professional -- enrolling in smiling lessons.

Now, Hod Lipson at Columbia University in New York and his colleagues have created a robot called Emo that uses AI models and high-resolution cameras to predict people’s facial expressions and ...

Smiling really can make people feel happier, according to a new article. A team of psychologists combined data from 138 studies testing more than 11,000 participants and found that facial ...

Before the new horror sequel Smile 2 scares its way into theaters, people sporting haunting grimaces are popping up at Major League Baseball games to seemingly promote the film.

Who are the people smiling at baseball games? The smiling individuals behind home plate are actors promoting "Smile 2," a horror movie sequel releasing just in time for Halloween.

Chinese people believe a smile is important, and reveals much about a person. Hong Kong is known as one of the least smiley places on the planet. Shouldn’t we all try to grin more?

Who are the people smiling at baseball games? The creepy, smiling people — some wearing bright shirts with the word "Smile" — are paid actors promoting the movie Smile, which premieres Sep. 30.