About 10,000 years ago, humans began to domesticate grains such as wheat and barley. Instead of running around to hunt, they thought: why not grow...
A caldera is simply a huge basin formed by the sudden collapse of the summit of a volcano when the magma chamber empties after a...
Light plays a crucial role in the life of a leaf, mainly because it enables photosynthesis, the process that provides plants with energy and food...
As you ascend to higher altitudes, the air becomes thinner: less concentrated, less dense, but still composed of 21% oxygen. So, even though the percentage...
Every year, whales undertake an impressive journey to warm, shallow waters where conditions are ideal for giving birth to their calves. These areas are safe...
Paper is primarily made of plant fibers derived from cellulose, a very porous natural polymer that forms a network of tiny spaces and interwoven channels. Imagine a...
Underground, hot rocks from the magma continuously heat the water present in underground cavities. This water gradually heats up but does not boil immediately due...
A solar eclipse occurs when the Moon passes directly between the Sun and the Earth, casting a shadow that reaches the Earth's surface. Where the...
The air that surrounds us always contains a bit of humidity, that is, water vapor in a completely invisible gas form. When this warm, humid...
A cloud forms from the condensation of water vapor that rises into the atmosphere. When warm air rises, it gradually cools down, and after a...
