Tickling is a very strange sensation because it doesn't depend on your will. That's right, you don't decide whether or not to laugh; your body simply reacts. Your brain doesn't even have a chance to ...

Don’t try this at home, but tickling a gorilla, orangutan, bonobo or chimp can inspire bursts of grunting sounds. Yes, that’s laughter, says Marina Davila Ross of the University of Portsmouth in ...

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Play is one of the least understood types of behavior. By tickling rats in the lab, scientists were able to identify a part of the brain critical for play and laughter. If you hang around on the right ...

It’s Friday, the gateway to two days of decadence and debauchery. If you’re not doing something you’ll regret on Monday, you’re probably not doing it right. Or, you know, you could just be watching ...

Why do we only laugh when someone else tickles us? Why can't I tickle myself? Here's what science has to say: Your question touches on one of the great mysteries of the human mind. No joke. Our ...

Getting your Trinity Audio player ready... By Rachel Feltman and Sarah Kaplan, The Washington Post Dear Science: Why do we only laugh when someone else tickles us? Why can’t I tickle myself? Your ...