Need a pick-me-up today? Watch a video of a smiling dog – it should do the trick. Any dog can smile, and according to veterinary behavior specialist Dr. Lore Haug, some breeds are even genetically ...

One of the biggest problems of Asperger people in love is that we can't tell a false "salesman" smile from a genuine nurturing smile. One smile is delivered for the benefit of the smiler; it's ...

It’s Friday, which may prompt a smile from you because it’s, you know, Friday. And “Everybody's lookin' forward to the weekend,” as that 2011 Rebecca Black song goes. But on this particular Friday, ...

The face we present to the world is constantly changing as different combinations of its 42 muscles contract and contort it. Humans can produce thousands of distinct facial expressions – including 19 ...