Surprisingly, bananas are classified as berries in botanical terms, while strawberries are not. This is because berries are fruits that develop from a single flower with one ovary and usually have several seeds inside. Bananas fit this definition, but strawberries do not. This fun fact shows how scientific classifications can be different from w

The human brain uses about 20% of the body’s total energy, even though it makes up only about 2% of the body’s weight. This high energy use is because the brain is constantly active, controlling everything from thinking and memory to movement and breathing. This energy mainly comes from glucose, a type of sugar found in the blood. Because th

The Great Wall of China is one of the longest man-made structures in the world, stretching over 21,000 kilometers (13,000 miles). It was built over many centuries to protect Chinese kingdoms from invasions and raids by nomadic tribes. The wall is made from various materials, including stone, brick, and earth. Besides its military purpose, the Gr

Sharks have existed for over 400 million years, long before trees appeared on Earth. These ancient predators have survived multiple mass extinctions thanks to their strong adaptability and efficient hunting skills. Sharks play a crucial role in maintaining the balance of ocean ecosystems. Despite their long history, many shark species face threa