Happiness can literally make you feel lighter inside, a bit like having some helium in your body. It usually only lasts a short time, but reflecting back on it can conjure up at least a ghost of the ...

Within 400 milliseconds, your brain and face begin responding to another person's smile, setting off a cascade that researchers are only beginning to understand.

Jack London, one of the most well-known authors in American history, was famous for his adventure novels, like White Fang and The Call of the Wild. He is less known, however, for his commentary on ...

Smile! It’s not hard to do, and it’s way easier than frowning, right? A study from Penn State University found that people who smile appear to be more likable, courteous. and even competent. When you ...

We can learn a great deal about life by observing the reactions of children. A child’s smile is an early indication that he is a rational animal. No other animal in the kingdom of animals is capable ...

This story is part of the My Unsung Hero series, from the Hidden Brain team. It features stories of people whose kindness left a lasting impression on someone else. Editor's note: This story discusses ...