20 Fun Facts About Human Brain
The human brain weighs about 3 pounds, which is approximately 2% of the body's total weight. Despite its size, the brain uses about 20% of the body's total energy and oxygen intake. The brain consists of about 86 billion neurons or nerve cells. It is also made up of about the same number of other types of cells,...
20 Fun Facts About Human Heart
Your heart beats about 100,000 times a day, which adds up to an astonishing 35 million times a year. The human heart is about the size of your two hands clasped together. The heart pumps about 5.7 liters (1.5 gallons) of blood throughout the body every minute. In an average lifetime, the heart will pump nearly 1.5 million...
20 Fun Facts About Human Ribs
The human rib cage is typically composed of 24 ribs, 12 on each side of the body. Ribs are classified into three categories based on their attachment to the sternum: true ribs (1-7), false ribs (8-10), and floating ribs (11-12). True ribs are directly connected to the sternum through their costal cartilage. False ribs are indirectly connected to...
20 Fun Facts About Human Fingers
Humans typically have five fingers on each hand, including a thumb that is opposable, meaning it can be positioned opposite to the other four fingers. This thumb opposition is crucial for fine motor skills like gripping small objects. The fingertips are one of the most sensitive parts of the body and have a very high concentration of nerve...
20 Fun Facts About Human Ears
The human ear is divided into three parts: the outer ear, the middle ear, and the inner ear. The visible part of the outer ear, also known as the pinna or auricle, serves to capture sound waves and funnel them into the ear canal. No two ears are exactly alike, not even your own two ears! They are...
20 Fun Facts About Human Nostrils
Humans have two nostrils, also known as nares, which lead to two separate nasal passages. The two nasal passages meet at the back of the throat and share a common drain to the esophagus. This design allows us to breathe through either the mouth or nose, or both. The human nostril is lined with tiny hairs called cilia...
20 Fun Facts About Human Saliva
Human saliva is 99.5% water. The remaining 0.5% is a mix of enzymes, electrolytes, antibacterial compounds, and various substances. Saliva plays a key role in digestion. It begins the breakdown of food with enzymes such as amylase, which breaks down carbohydrates, and lipase, which starts to digest fats. We produce about 1 to 2 liters of saliva each...
From Failed Waterproof Sock to Summer Staple: The Surprising Origin of the Water Balloon
Water balloons, or as they are sometimes referred to, "aqua bombs," have been a staple of summer fun and water warfare for many years. Yet, their origin story is one not widely known. While it seems like a relatively recent invention, the birth of the water balloon surprisingly dates back to the 19th century. The water balloon, as we know...
Top 10 Animals With Best Vision
Eagles: Eagles, such as the Bald Eagle or the Golden Eagle, have some of the most impressive vision in the animal kingdom. They can spot small prey from miles away, and their eyes are specially adapted for keen depth perception. Mantis Shrimp: The mantis shrimp has one of the most complex visual systems ever discovered. They can see...
15 Fun Facts About Tapir
Species: There are four recognized species of tapirs: the Brazilian tapir, the Malayan tapir, the Baird's tapir, and the mountain tapir. Ancient Animals: Tapirs have been around for a long time - fossils of their ancestors can be traced back to over 50 million years ago. Trunk-Like Nose: Tapirs have a distinctive, flexible, trunk-like nose and upper lip...
