"They are miraculous too big, too small, too high and too short," one viewer joked, as others shared their opinions.

Research suggests that women may have better empathy skills ... it sounds very odd,” says Provine. Watch Laughing and Crying on The Nature of Things to learn more.

“Ha ha,” “hee hee,” “boo hoo,” “waaa, waaa”…. The unmistakable sounds of laughing and crying are recognizable all over the world. They’re pillars of human communication and the ...