Soap bubbles are made up of a thin film of water, soap, and air. Over time, the water they contain gradually evaporates into the surrounding...
Even though the water of a mountain stream appears as clear as crystal, it can host invisible but dangerous pollutants. Sometimes, there are agricultural chemicals, including traces...
Fire is a chemical reaction called combustion: it is simply a material that reacts quickly with oxygen, releasing a lot of energy. This energy comes...
In rocks, atoms are naturally organized into precise geometric shapes called crystalline structures. It is these regular patterns that allow crystals to play with sunlight. When a...
Bronze is primarily an alloy of copper and tin, two metals that react with the air over time. It is mainly the copper that poses...
Bioluminescence in marine algae primarily comes from a natural chemical reaction performed by certain microscopic aquatic organisms known as dinoflagellates. These tiny organisms, invisible to...
Light is basically the fuel that allows plants to make their own energy. Thanks to the green pigment called chlorophyll, they capture sunlight. This is...
These amazing arch shapes often come from a subtle mix of erosion and rock type. Generally, it all starts with cliffs or rock layers already...
Heliotropism is the ability of plants (like the sunflower) to orient themselves throughout the day towards the sun. Specifically, at the start of the day, the flower...
The bright color of corals mainly comes from tiny algae called zooxanthellae. These microscopic algae live within the tissues of corals and produce different pigments...
