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, ...

Laughter has long been seen as the best medicine, but for Madan Kataria, a medical doctor from India, it became a life ...

They say laughter is the best medicine but this video also proves its also pretty contagious. The Laughing Tram Man stood along side other travelers on a simple Monday morning and began to giggle. As ...