We're talking about your smile, of course! A smile can do plenty of things—make you happier, turn a complete stranger's day ...

Smiling likely evolved from a “fear grin” displayed by primates to show submission or harmlessness. Over time, this gesture transformed into a powerful tool for social bonding and emotional ...

Because of the success of the original horror movie, Smile 2 will present those killer smiles at a pop concert. If you’re ...