The intense colors of fireworks primarily come from the phenomenon of chemical combustion. When the fireworks explode, they release a very strong energy in the...
First, the choice of red to indicate stop comes from the railway domain, long before the existence of cars. In the era of steam railways, a clear...
Marie Curie and her husband Pierre conducted groundbreaking experiments on radioactivity, a phenomenon that was still poorly understood at the time. They discovered two new...
Waves at sea primarily begin due to the wind. The wind blows across the surface of the water, pushing it and transferring its energy to...
Bird migration is a fascinating phenomenon that raises many questions. Why do birds undertake such long journeys every year? Several factors explain this migratory behavior. One of...
Comets resemble sort of dirty snowballs, primarily made of water ice, dust, frozen gases like carbon dioxide and ammonia, as well as small rocky pieces. These icy...
Pollen is the primary culprit in seasonal allergies, not surprising since it floats everywhere in the air at certain times of the year. When it...
The higher you climb in the mountains, the lower the temperature drops. Why? Because the air at altitude becomes thinner: the molecules are less numerous...
The color we perceive in a plant mainly depends on molecules called plant pigments. Among the most important are chlorophyll, famous for its green hue, but also...
In environments like peat bogs or swamps where many carnivorous plants live, the soils are extremely poor in essential nutrients, especially nitrogen and phosphorus. These...
