Each time you blink, the action drags tears along the surface of your eye. This keeps it wet, clean, and healthy. If your glands don't produce enough tears, you can get a condition called aqueous ...

Tears are usually seen as a sign of sadness or pain, but it’s not uncommon for people to cry during life’s most joyful moments ...

Turns out, not quite.. No scientific explanation There is no scientific evidence to support the belief that the eye shedding the first tear determines the emotion behind it. The idea that a tear ...

These “happy tears” seem contradictory ... humans are the only animals known to shed emotional tears. While many mammals produce reflex tears to lubricate the eye, only humans cry in response ...