Yakov Smirnoff's Happily Ever Laughter is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet ...

Laughter is one ‘trick’ babies and small children use to keep adults interested and engaged with them. They chuckle to show you how happy they are playing with you. And their laughter is so ...