My three young daughters like to watch pets doing silly things. Almost daily, they ask to see animal video clips on my phone and are quickly entertained. But once my 7-year-old lets out a belly laugh, ...

Laughter is something that everybody has in common. Though people's senses of humor may differ, there is always something that can tickle a person's funny bone and cause them to crack up. RELATED: The ...

We dare you not to crack a smile watching this girl laugh hysterically at her older sister! There is something so human and special when you hear a genuine uncontrollable laugh erupt. No one has a ...

Have you ever burst into laughter when it was totally inappropriate? If not, consider yourself lucky. There is nothing more horrifying than losing control and laughing hysterically in the midst of an ...

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Long before modern brain imaging technologies illuminated the neurophysiological mechanisms that make laughter contagious, William James (1842-1910) observed, "We don't laugh because we're happy, ...