Structure of tears influenced by what makes us cry

Photographs of 100 tears, taken through a microscope, reveal the different images they create when we cry from sadness, pain or joy

Why Do We Cry? The Truth Behind Your Tears

Rose-Lynn Fisher / Tears

Why do we cry? The science of tears, The Independent

Do Different Types of Tears Look Different Under a Microscope?

Tears change based on emotions - Medownick Laser Eye Surgery Melbourne

Benefits of crying: It's good for your mind and body

Does the chemical composition of tears differ based on the emotion that is causing the tears? - Quora

What Are Tears Made Of and Why Do They Happen? 17 Facts

Frontiers Comparative Analysis of Tear Composition in Humans, Domestic Mammals, Reptiles, and Birds

Watch We Shall Remain, American Experience, Official Site

The Surprising Benefits of Crying for Men