Are Happy Tears Different From Sad Tears? - Are Happy Tears Different From Sad Tears?

There are countless situations that can drive us to tears, from the happiest of moments to slicing onions on a table.  We often think of tears as merely being tears, without much in the way of dist…

Crying: The Power of a Good Cry - The New York Times

7 Facts About Crying That Explain A Lot

The surprising mental and physical benefits of crying happy tears

The Microscopic Structures of Dried Human Tears, Science

Be a genius. - There are three different types of tears. Psychic tears (happiness, sadness) are caused by extreme emotions. Basal tears are made to keep the cornea lubricated. Reflex tears (onions

Why Do We Cry When We Are Happy?

No, there's no meaning behind the first tear being shed from one's left or right eye - Africa Check

The Microscopic Structures of Dried Human Tears, Science

Are tears structurally or chemically different depending on the reason for crying? - Quora

Do Different Types of Tears Look Different Under a Microscope?

What Happens When You Cry? Doctors Explain

Science Channel - Why do we cry? There are several reasons. Learn here

What do black tears mean? - Quora

Photographer Maps Emotional Terrain, One Drop At A Tim : The Picture Show : NPR