Bio · Science

Tears Served as a Means of Communication Before the Evolution of Language

Leading expert in neurology Michael Trimble, British professor at the Institute of Neurology in London, examines the physiology and the evolutionary past of emotional crying.

Trimble explains that biologically, tears are important to protect the eye. They keep the eyeball moist, flush out irritants and contain certain proteins and substances that keep the eye healthy and fight infections. He explains that in every other animal on planet Earth, tears seem to only serve these biological purposes.

However, in humans, crying or sobbing, bawling or weeping seems to serve another purpose: communicating emotion. Humans cry for many reasons- out of joy, grief, anger, relief and a variety of other emotions. However, our tears are most frequently shed out of sadness. Trimble said that it was this specific communicative nature of human crying that piqued his interest.

“Humans cry for many reasons,” he told Scientific American. “But crying for emotional reasons and crying in response to aesthetic experiences are unique to us.”

Continue at Medicaldaily

Animalia · Bio · Eco/Adaptable · Science · Vital-Edible-Health

Moths and Bees that drink Animal Tears. Yes, Including Yours

If you ever were told by someone not to cry or that crying is useless, that person was far away from the truth. Besides being perfectly natural, therapeutic, and necessary, crying produces nutritious food for moths, bees, and probably many other herbivores. This is definitely one of my favorites examples of mutualism out there. However, these “lachryphages” are picky when choosing their ocular bars and sweet pools.

If this awakens your hidden entomologist or simply your hidden fetishes, here I have a group of articles deepening on this curious fact:

Bees That Drink Sweat From People’s Skin and Tears From People’s Eyes

Urban Buzz: A New Bee That Sips Sweat. Native Insects Getting Closer Look; Humans as ‘Salt Lick’

Moths drink the tears of sleeping birds

Moths with a taste for tears: Insects that live off the tears of mammals

The image above is a fabricated image fount at The Nonist’s wonderful text: Romancing the Lachryphage

Post by Wanderlustmind