If you're ever beset by a strange and distinct feeling that you can't quite name, you're not alone. Just as the English language has pulled in loanwords like "schadenfreude" to name emotions with no English equivalent, there are a number of words other languages use to describe emotions still unnamed in English. Designer …

Can you tell the difference between a genuine smile and one masking frustration? We aren't always conscious of the expressions we make in certain situations, which puts us at a disadvantage to computer programs that understand our facial expressions better than we do.

In science fiction androids and Vulcans and the like are portrayed as kind of badass, with no emotions to trip them up or slow them down. They might be a little socially awkward, but they are scrupulously honest, fair, brave and logical. But what would we actually be like if we banished emotion?

Anger carries a lot of baggage. Musical tones, color schemes, physical sensations, and words can all convey this emotion, and the pictures above are compilations of people's feelings of rage.

Well, that and know a lot about the subject of your predictions. That's the idea behind new research coming out of Columbia, which claims people who trust their feelings are more likely to make accurate predictions than those who don't.

Just like humans, chimpanzees yawn when they're bored or sleepy, and they also yawn contagiously when they see another chimp do it. That discovery could help unlock the secrets of human empathy.

When your sweetheart dumps you, there's a reason why it hurts so much. It turns out your brain registers the psychological hell in exactly the same way it registers physical pain.