Do you find it difficult to choose the perfect smiley-face emoji when trying to convey happy emotions in a text message? Although many emojis look very similar, it seems there are countless slightly ...

Thoughtful questions often prompt thoughtful analysis and recently a series of questions from a reader regarding "micro-expressions" had such an effect on me. His questions made me stop and think ...

Human faces pop up on a screen, hundreds of them, one after another. Some have their eyes stretched wide, others show lips clenched. Some have eyes squeezed shut, cheeks lifted and mouths agape. For ...

We smile because we are happy, and we frown because we are sad. But does the causal arrow point in the other direction, too? A spate of recent studies of botox recipients and others suggests that our ...

The human smile is a powerful thing. To elevate mood, inspire empathy, or calm a fast-beating heart, you don’t need a gleaming row of perfect pearly whites. One YouTube baby-laugh video is enough to ...