Ancient Persia was largely dominated by an arid to semi-arid climate, with vast desert or semi-desert regions. The terrain varied from mountain ranges to dry, dusty plains....
The salt in the oceans primarily comes from land rocks. Over time, rain and rivers wear down these rocks, which contain numerous minerals, including salt, mainly in...
Frost in the shape of feathers most often appears when it is cold and rather humid. When the air contains a lot of water vapor...
Diamonds are made up solely of carbon atoms bonded together in a very particular way. Each atom is surrounded by four other atoms in a...
At high altitude, the air is thinner in oxygen, which complicates breathing. The Incas found a clever way: drinking coca juice. This plant contains substances...
When a ball hits a hard surface, it bounces more because almost all the energy is directly returned to the ball, with less loss. In...
The intense yellow-orange color of turmeric mainly comes from a compound called curcumin. It is a very powerful natural pigment, belonging to the curcuminoids family, which easily...
When a ball hits the ground, it temporarily deforms upon contact. This deformation directly depends on the elastic properties of the material it is made...
When we observe the color of a flame, we are actually looking at a chemical phenomenon related to combustion and how atoms react to heat. Atoms contain...
If an object floats or sinks, it is primarily due to Archimedes' principle, an upward force exerted by a liquid on any object submerged in...
