Science

Monday, 18 May 2026
13 facts about tears
13 facts about tears
Multipurpose liquid
Associated with emotions, tears are a product of lacrimal glands, found in the eyes of most terrestrial vertebrates. Although their primary function i ...

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Tears
Insincere or inauthentic regret is called “crocodile tears.”
The term derived from a belief that crocodiles cry to lure and devour their prey. It is untrue, howe ...
Fungi
All fungi are heterotrophic organisms and can only occur in habitats containing organic compounds.
Many species require small amounts of them to survive. They can be saprophytes feeding on dead organic matter, or parasites developing at the expense of other living organisms.
Earth
The largest part of the Earth's land is used for animal breeding (30 to 47 percent).
This is followed by wasteland and wilderness (24 to 31 percent), human forests (16 to 27 percent), arable farms (12 to 14 percent), and infrastructure (1 percent).
Deimos
The composition of Deimos is very similar to that of C- and D-type asteroids.
Graphene
Nowadays, scientists are interested in a single layer of graphite carbon atoms.
In graphite, each carbon atom is connected to three other atoms and all these bonds lie in one plane ...
Brain
The brain produces about 25 watts of energy.
It does not happen that the brain does not function even for a nanosecond. It constantly analyzes, t ...
Tears
Watery eyes may be a signal of dry eye syndrome.
Dry eye syndrome is caused by insufficient quantity or quality of tears, which prevents the proper lubrication of eyeballs. It causes excessive watering of the eyes, as a response to the irritation.
Aurora
Auroras take many shapes. They can appear in the form of colored rays, streaks, ribbons, curtains, crowns, arcs, and others.
Graphene
The publication of a groundbreaking experiment on two-dimensional graphene, as well as the description of a surprisingly easy method of obtaining it, triggered a real “graphene gold rush.”
Research has expanded and divided into many different subfields, examining various unique properties of graphene-quantum mechanics, electrical, chemical, mechanical, optical, magnetic, etc.
Cosmos
The early universe lasted from 1 picosecond for 370.000 years.
During the first stages of this period, it was still too hot for the elements to form spontaneously ...