Tears have a wide range of functions that are critical to ocular health and emotional regulation. Each type of tear has a slightly different biochemical structure and content specialized to their ...

Emotions are so interesting.

To the best of our scientific knowledge, only humans cry, which is to say the tears of other animals are not inspired by their emotional states, reports Katherine J. Wu for the New York Times. The ...

Birds and reptiles may not resemble humans in many ways, but they cry similar tears. The composition of human tears is well known, but until now, there was very little research into the composition ...

Anything that moves someone emotionally — hearing a baby say her first word, finishing a feel-good TV series that you wished had never ended, or reading a breakup text — can bring on tears. In fact, ...

Humankind has spent much of its history trying to define what makes us different (and, by implication, soooo much better than) other animals. Is it our magnificently huge brains? Tell it to the ...

Forbes contributors publish independent expert analyses and insights. I write about relationships, personality, and everyday psychology. Emotional tears are a uniquely human behavior. Research ...

A new study adds to evidence suggesting that people's perceptions of others' tears as sincere or manipulative likely depend on a variety of contextual factors. The findings suggest tears may be ...

It’s been said that angry tears are salty and happy tears are sweet. Whether or not that’s actually the case, it is true that not all tears are the same. Tears from chopping an onion are different ...