Science

Wednesday, 19 November 2025
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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Amber
Amber often contains remains of insects, crustaceans, spiders, as well as plants.
The genetic material of organisms trapped within the amber is dissolved, so there is no possibility of recreating millennia-old creatures, such as dinosaurs, plainly out of the remnants from amber.
Silver
Silver is also used in medicine. Its healing properties were already described by Hippocrates.
Its importance in medicine lies in the use of strong antibacterial properties. Before antibiotics were available, silver compounds were used to prevent infections during World War I.
Silver
Silver is the raw material for the production of coins.
Coins were produced from it as early as the 7th century BC. They were made in an ancient country called Lydia, from an alloy of silver and gold called electrum.
Tears
Humans are the only animals able to shed emotional tears.
Despite various studies, no evidence to the contrary has yet been announced.
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 ...
Aurora
The aurora is an inseparable element of the polar regions.
It occurs in high latitudes, mainly beyond the Arctic Circle. It also happens, however, that under favorable conditions, it can be observed around the 50th parallel.
Large Magellanic Cloud
One of the closest supernovae is SN 1987A, which exploded inside the Large Magellanic Cloud around February 23, 1987.
It was the brightest supernova recorded since 1604.
Graphene
Graphene has unique “heating” properties.
This property is used in an innovative method of pain treatment (local heating of tissues to a tempe ...
Titan
In June 2027, NASA plans to send a Dragonfly mission to Titan.
It is to reach the surface of the moon in 2036 and, among other things, analyze the organic compound ...
Enceladus
On February 17 and March 9, 2005, the Cassini spacecraft flew by the moon and discovered the moon's faint and thin atmosphere.