Ivittuut thrived mainly due to its enormous reserve of cryolite, a rather rare and highly sought-after mineral. The great peculiarity of cryolite is that it...
Stars are born from massive clouds of gas and dust called nebulae. Under the influence of gravity, these clouds contract, heat up, and trigger nuclear...
The ancient builders had a perfect understanding of the celestial cycles, carefully observing the stars to track their regular movements and predict significant phenomena. The...
At night, the ionosphere (an electrically charged layer located at high altitude) changes its structure. It becomes more stable and reflects certain radio frequencies better. During the...
The wings of bats are unique: they are made of a flexible skin membrane called patagium, stretched between super long and thin fingers like needles. These extended...
The speed at which light travels directly depends on the refractive index of the medium it passes through. This index, essentially, is like a number...
Magma, this burning liquid rock beneath the Earth's surface, largely determines a volcano's ability to erupt. Its texture, called viscosity, directly influences its activity: fluid...
Plants capture the carbon dioxide present in the air through their leaves. With sunlight, they use this gas to create their own energy through a...
Fish breathe underwater thanks to their gills, small organs typically located behind the head. The gills function like a kind of oxygen filter: they capture...
In response to certain very unpleasant sounds, the body initially reacts with a contraction reflex of the middle ear muscles, particularly to try to suffer...
