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, ...

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, ...

In this uplifting clip, a young girl enjoying playtime with a dog aboard a train spreads happiness with her contagious laughter. The surrounding passengers are clearly charmed, their faces glowing ...

This video captures a charming and uplifting moment between a young girl and her mother as they prepare for sleep. The ...

Human laughter is such an intrinsic part of our lives that we don’t tend to give it much thought. But we are one of only a handful of animals that do it, along with apes, dogs, and, quite bizarrely, ...

This story is free to read because readers choose to support LAist. If you find value in independent local reporting, make a donation to power our newsroom today. Neuroscientist Sophie Scott studies ...

Nothing is cuter and more heartwarming than listening to a baby or toddler laugh when tickled. Their laughter is contagious and most of the time it'll make you laugh too! Lwiro Primates shared a video ...

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, ...

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, ...