You prepared thoroughly for a presentation at work, and now you’re dropping wisdom to a packed room. Much as you expected, your colleagues appear wowed and ...

Humans are social beings, hardwired to navigate complex interactions through signals that communicate our internal states. Of all the channels we use to perceive emotion, the human face is arguably ...

The classic song "When You’re Smiling (The Whole World Smiles With You)," made famous by Louis Armstrong and later sung by artists like Frank Sinatra and Michael Bublé, captures an idea most of us ...

Keira Knightley and Kristen Stewart are its best ambassadors. Instead of curving upwards, their mouths curve downwards, giving them a unique charm. The inverted smile, which doesn't follow the usual ...