For the Maya, a solar eclipse was seen as a troubling disruption of the usual cosmic order. They often imagined that a supernatural being, a...
When the wind coming from the sea reaches the coast, it often hits specific landforms such as cliffs, dunes, or hills. These elements channel or...
The sun emits white light, which combines all visible colors. When this light hits water, each color reacts differently. The red, orange, and yellow wavelengths...
The sun acts as the main engine of the water cycle, thanks to its thermal energy. Specifically, it heats the oceans, lakes, and rivers, transforming...
Sharks breathe through their gills, which consist of several slits located on either side of their head. Unlike mammals that use lungs to breathe air, sharks extract...
Each dolphin has a kind of signature sound, a unique whistle that serves somewhat like a name. From birth, they develop their own signature whistle...
Steel is primarily composed of iron with a little carbon added. In iron, there are small groupings of atoms called magnetic domains, each behaving like...
Some rocks are hard and resilient, like granite: they create sharp, steep, or pointed peaks. Other rocks, softer like limestone, wear down quickly or slightly...
When an air bubble sinks in water, it is pushed upwards by a force called Archimedes' buoyancy. Basically, any object submerged in a liquid experiences...
Coffee grounds are mainly full of organic compounds derived from roasted beans. They primarily contain cellulose and lignin, which are plant fibers. It also contains...
