The human eye is so sensitive that if the Earth were flat and it was a night, a candle’s flame could be seen from 30 miles away.
100 Mind-Blowing Human Facts
There’s a bar in Yukon that serves a “Sourtoe cocktail.” It consists of a shot of whisky with a human toe floating in the glass. An estimated 60,000 people have had it.
Non-violent attempts to escape Mexican prisons are not punished because “it’s human nature to want freedom.”
Ancient Roman surgeons were trained to block out the screams of human pain.
Every 10 years, the human skeleton repairs and renews itself. Essentially, you have different bones now than you did 10 years ago!
Every second, the human eye moves about 50 times.
The total population of insects is estimated to be a billion times greater than that of the human population.
The average temperature of a beehive is the same as a human body. Bees flap their wings to regulate heat.
The average human heart beats 3.6 million times a year.
False eyelashes were invented in 1916 when a producer wanted to enhance an actress’s eyes in a movie. The lashes were made of human hair.
In a human foot, there are 26 bones.
The word “Android” means a human with a male robot appearance.
In 2000 the first permanent crew inhabited the International Space Station (ISS). Since then, there’s always been a human presence in space.
The Sun makes a sound but we can’t hear it. In the form of pressure waves, the Sun does make a sound. The wavelength of the pressure waves from the Sun is measured in hundreds of miles, however, meaning they are far beyond the range of human hearing.
There are more bacterial cells in your body than human cells. The average human is around 56 per cent bacteria. This was discovered in a 2016 study and is far less than the earlier estimates of 90 per cent. As bacteria are so light, however, by weight, each person is over 99.7 per cent human.
The longest anyone has held their breath underwater is over 24.5 minutes. The world record for breath-holding underwater was achieved by Croatian Budimir Šobat on 27 March 2021, who held his breath for a total of 24 minutes and 37 seconds. On average, a human can hold their breath between 30-90 seconds.
Human teeth are the only part of the body that cannot heal themselves.
The cornea is one of only two parts of the human body without blood vessels. The cornea is the clear part of the eye that covers the pupil and other parts of the eye. Cartilage and the cornea are the only types of tissue in the human body that do not contain blood vessels, according to scientists at the Harvard Department of Ophthalmology’s Schepens Eye Research Institute.
Human beings can use only a small fraction of Earth’s water. In school, we were taught that most (specifically, 71 per cent) of the planet’s surface is covered in water. While that’s true, humans can use only 0.007 per cent of that water, according to National Geographic. That’s because only about 2.5 per cent of Earth’s water is freshwater, and only 1 per cent of that is accessible. The rest is made up of glaciers and snowfields.
Most Disney characters wear gloves to keep animation simple. Walt Disney might have been the first to put gloves on his characters, as seen in 1929’s The Opry House, starring Mickey Mouse. In addition to being easier to animate, there’s another reason for the gloves: “We didn’t want him to have mouse hands because he was supposed to be more human,” Disney told his biographer in 1957.
Human noses and ears get bigger as we age. It’s pretty common to see the claim that our nose and ears are the only parts of our body that keep growing as we age, but that’s not exactly true. Our nose and ears stop growing along with the rest of our body, but thanks to the weight of gravity, both parts continue to lengthen over time, according to the Discovery Channel.
Humans have jumped farther than horses in the Olympics. The Olympic world record for the longest human long jump is greater than the world record for the longest horse long jump. Mike Powell set the record in 1991 by jumping 8.95 meters, and the horse Extra Dry set the record in 1900 by jumping 6.10 meters.
Boars wash their food. National Geographic reported that at Basel Zoo in Switzerland, zookeepers watched adult and juvenile wild boars pick up sandy apples and bring them to a nearby creek in their environment to wash before eating. Though some items like sugar beets were eaten without human-like behaviour, the boars brought a whole dead chicken to the creek to wash before chowing down. One ecologist called this a “luxury behaviour.”
Lobsters taste with their feet. Tiny bristles inside a lobster’s little pincers are their equivalent to human taste buds. Meanwhile, lobsters’ teeth are in one of their three stomachs.
Human teeth are the only part of the body that cannot heal themselves. Teeth are coated in enamel which is not a living tissue.
The longest bone in the human body is called the femur. It’s your thigh bone.
Eating polar bear liver can kill a human being. If eaten in one meal, 30-90 g of polar bear liver can be fatal. Its high concentration of Vitamin A is toxic to humans.
Scientists grew a human tooth from scratch using pee. In 2013, the first artificially reproduced human tooth was created in China. The scientists were able to create the tooth using stem cells extracted from human urine.
The katydid bug hears through holes in its hind legs. Insects are known to be all sorts of strange, but this is one of the cooler fun facts: The katydid hears with its legs! The katydid’s ears are located on its two front legs. Like the human ear, the ear of the katydid collects sound, converts it, and analyses the frequency.
Human birth control pills work on gorillas. During an experiment conducted on four captive gorillas, scientists observed a difference in behaviour. Peak sexual behaviour was observed during menstruation rather than after.
The world’s quietest room is located at Microsoft’s headquarters in Washington state. In Building 87 of Microsoft’s headquarters in Redmond, Washington lies the quietest room in the world. With a record-breaking background noise of -20.35 dBA, this room is 20 decibels below the minimum of human hearing. It is so silent that if you stay in it for long enough, you’ll start to hear your heartbeat, a deafening ringing in your ears, and the grinding of your bones. To achieve absolute silence, the room was constructed with an onion-like structure made of six layers of concrete and steel.
Toto was paid $125 per week while filming The Wizard of Oz. In the 1939 hit The Wizard of Oz, Toto was played by a brindle Cairn Terrier named Terry. She was paid a $125 salary each week, which was even more than some of the human actors (ie: the Singer Midgets who played the Munchkins allegedly received $50 to $100 a week).
A pig was once held in trial for the death of a child. During the Middle Ages, it was normal for animals to be tried for human crimes. In 1386, a pig was even arrested for injuring a child. When the child died, the pig was placed on trial which ruled the pig’s public execution.
Human fingers are really sensitive. The nerve endings on fingers are so sensitive that if your fingers were the size of Earth, you could still feel the difference between a house and a car.
2 parts of the human body never stop growing. Our noses and ears never stop growing, even when the rest of the body has stopped.
Humans have jumped further than horses in the Olympics. The Olympics has been a good measure of humanity’s physical limits and capabilities. You’d be surprised that the world record for the longest human long jump is even greater than the record for the longest long jump done by a horse. When Mike Powell jumped 8.95 meters, he beat the record of Extra Dry who jumped at 6.10 meters.
Pubic hair lives for about 3 weeks long. Pubic hair also indicates if the human body is ready for reproduction. It also protects the genital area during reproduction.
The bones of the human body can multiply in density. This occurs in very extreme cases. People who have been discovered to have this rare gene mutation have cases of walking away from car accidents and other impact injuries without fractures.
A park ranger from the U.S. was once hit by lightning 7 times. This occurred between the years 1942 to 1977 at the Shenandoah National Park in Virginia. This park ranger holds the name of the Human Lightning Rod in the Guinness Book of World Records.
Honeybees can recognise human faces. Bees see in a compilation of over 5000 individual images. They combine all of these images to recognise their surroundings.
Sourtoe cocktails are served in Yukon. The drink has been served since the 1970s and contains a shot of whiskey and a human toe floating inside the glass. All toes that are served with the drink have been mummified beforehand.
Mexican prisons do not punish you for non-violent attempts to escape. This is because it is part of human nature to want freedom, and therefore is not seen as a crime. However, factors such as property damage and violence will cause prison guards to practice the necessary punishments.
The human vagina always holds a small amount of yeast. Even without an infection, the vagina will always hold some kind of fungus. Regular cleaning of this area is advised to prevent the growth of bacteria and infections.
The human brain uses 20% of the oxygen in your body. This is continuous and it does not rest even when we sleep. This is why when people yawn it is believed to be the brain’s way of cooling down.
Most of the viruses embedded in our DNA are gone already. Most of these viruses have already gone extinct due to human evolution and changes in environments. Modern medicine also played a role in the extinction of these viruses. If scientists were to revive any of these viruses, it could cause a major outbreak that humans won’t quickly heal from.
25% of bones in human adults are located on their feet. The feet also contain about 20-25% of joints found in the human body. Each foot contains 33 joints. The whole body contains a total of 250-300 joints in total.
About 80,000 plant species are edible. However, in the present day, only 150 species are regularly cultivated. 30 of these products make up 95% of the human’s usual calorie and protein intake.
Eating too many onions can cause sleepiness. The onion is full of beneficial minerals that are good for the human body. However, it is also a natural sedative because they are rich in L-tryptophan.
The world’s most dangerous tree is called the manchineel. This is native to tropical southern North America and northern South America. Every part of the tree contains toxins that can cause blisters and skin breakouts on human skin just from touch.
The femur is the largest bone located in the human body. The head of the femur fits into your hip socket and the bottom ends of it connect to your knee. More commonly, this bone is referred to as the thigh bone.
The tooth of an elephant weighs around 9 pounds. Their teeth are made from ivory which is a white material for the tusks and teeth of animals. This is covered with an outer layer of enamel that closely resembles the coating on human teeth.
Only 3 mammals experience menopause. This includes elephants, humpback whales, and also human females. However, unlike animals, human females can live much longer after experiencing menopause.
The human bone is stronger than steel. If you were to have a bone and a piece of steel of the same length and thickness, the bone would be five times stronger than the steel bar. However, bones are brittle and can also fracture on impact.
The human tongue has a unique print. Much like fingerprints, the human tongue also holds its unique pattern that can be identified differently from everyone else’s. The tongue is a unique organ that is well-protected and difficult to replicate.
You can swim through the veins of a blue whale. The blue whale is the largest living creature on the planet. It is so big that its veins are big enough for an adult human to swim freely around it.
A newborn Chinese water deer fits in the palm of the average human hand. Also known as the hydropotes inermis, this species of deer is found worldwide. They are better known for their teddy bear-like appearance.
The average human processes 100,000 pounds of food in a lifetime. That is approximately 35 tons of food in a lifetime. Apart from food, the average person will also ingest about 100 milligrams of dirt every day.
Fleas can jump 200 times its height. The fleas are claimed to be the best jumpers in the world due to their size and the lengths they can jump. The height of a flea jump is equivalent to a human being jumping to the top of the Empire State Building from the ground.
Humans have five vital organs. Without any of these organs, a human being cannot survive. These organs include the heart, lungs, kidneys, liver, and the brain.
Pumpkin flowers are edible. The seeds, stem, skin, and flesh are all safe for human consumption. These flowers are also used in some native dishes in some countries. More commonly they are deep-fried.
Dogs have over 1,700 taste buds. A dog’s sense of taste is about ⅙ as powerful as the human tongue. Studies have shown that dogs are also able to detect the same basic taste classifications.
Wisdom teeth have no purpose. Wisdom teeth are vestigial third molars that have helped in grinding plant tissue. It was believed that the jaws of human ancestors had larger jaws with more teeth. Often wisdom teeth are removed to prevent complicated problems that could occur if they continue to grow inside the mouth.
A human being can live with only one kidney. A person may have one kidney removed to treat an injury or disease. Even with one kidney, they may still be able to lead normal and healthy lifestyles.
A human thumb has its pulse. The reason for this is because there is a large artery located in the thumb. This artery has a pulse different from the heart, which is why nurses use their middle and index fingers to take a patient’s pulse.
Human lips are very sensitive. They are sensitive because they have the thinnest layer of skin on the body. The lips have over 1 million nerve endings.
The human skull is formed by 29 different bones. These are composed of cranial, occipital, parietal, frontal and temporal bones. It also includes facial, NASAl, and lacrimal bones.
Humans share about 50% of our DNA with bananas. By sequencing the entire genome of various organisms, researchers have discovered similarities in their base material. Human beings have been found to share many of the housekeeping genes that are necessary for cellular function with bananas.
The smallest cell in a man’s body is the sperm cell. It is also the overall smallest cell in human biology. However, this is also one of the most complex cells in the male body as well.
Mars appears red to the human eye due to the iron oxide particles that suspend its atmosphere. Sometimes it can also appear orange or orange-red colour.
Human blood is red due to the haemoglobin in our bodies. Vertebrates and most animals also have red blood.
The human teeth are as strong as a shark’s teeth. Scientists have found that human teeth are just as strong as the teeth of sharks. This is even though human teeth are made from a softer mineral compared to the ones found in a shark’s.
Potatoes can reflect your wi-fi signal. In a 2012 experiment to test the wireless signals on new planes, potatoes were used and placed on the seats. The results found that because of the high water content of the potatoes, they can reflect and absorb radio and wireless signals. Human beings are also able to do the same thing.
The cornea does not receive a blood supply. This is the only part of the human body that does not have a blood vessel. The cornea receives its oxygen directly from the air.
The human skull remains conscious after decapitation. It remains conscious for a few seconds to a minute after being separated from the body. A full brain shutdown occurs after 48-96 hours.
The human body is the cause of metallic smells found in coins and other metals. Upon contact with some metals, 1 Octen 3 One is formed as the result of the decomposition of oil present on the skin. This is what causes the metallic smell from metal.
The human brain is 78% water. Up to 60% of the adult human body is made up of water. Research has indicated that both the human brain and heart are around 73-78% water.
The human tongue heals the fastest compared to all body parts. This is due to the rich supply of blood that circulates the tongue. It may also be because the mouth is constantly replenishing your taste buds.
The human liver has 500 functions. This is also the only vital organ inside the human body that is capable of regenerating. One of the more well-known functions of the liver is producing bile which helps in the process of digestion.
Humans have just 1 bone less than horses. Horses have an average of 205 bones or more while the adult human is set at 206. On average, horses will live for 25-30 years.
A fly will always launch backwards to get away faster. Fruit flies can turn midair by shrugging their shoulders. Research has also found that a fly can process information at a much faster speed compared to humans. The average fly can process the ongoings of its surroundings seven times faster than a human being can.
A caterpillar has more muscles than a human being. A caterpillar has over 4,000 muscles in its body. The head of the caterpillar alone holds over 248 individual muscles, and over 70 muscles control each body segment.
The human attention span is now shorter than a goldfish’s. In 2000, the average human attention span was 12 seconds. However, scientists have since claimed that we now have shorter attention spans (of 8.25 seconds) than goldfish, who can focus for 9 seconds. Interesting facts, or scary facts?
The human brain is the only brain that shrinks with age. Humans are the only animals that get dumb when they get older. Other animals’ senses would get dull, but they retain the same brain mass.
The small intestine is bigger than the large intestine. The human body is pretty weird. The small intestine measures 20 ft long and 1” in diameter. Meanwhile, the large intestine is 5 ft long and 3” in diameter. Essentially, the small intestine is larger than the large intestine.
Human meat is rich in protein. However, early cannibalism was not practised because of diet or starvation. Historical instances of human meat consumption were mainly symbolic or religious gestures.
You’re 10 times more likely to get bitten by a person than a shark. In New York City, the annual number of human bites is 10 times higher than the yearly number of shark bites worldwide.
A volcanic eruption once killed 80% of the Earth’s sheep. When the Laki volcanic fissure in Southern Iceland erupted for eight months in 1783, it killed off 80% of the sheep in the world. Additionally, roughly 25% of the world’s human population died.
A human could swim through a blue whale’s veins. This is one of the WTF facts that’ll just make you feel small.
There are 60,000 miles of blood vessels in the human body. If you took out all of your blood vessels and laid them end to end, they would stretch over 2 times around the entire world.
Before alarm clocks, there were human alarms. Knocker-Uppers originated in Britain during the Industrial Revolution. When people needed to wake up and get to work, a knocker-upper’s job was to take a wooden stick and knock on the door to wake them up.
One man’s sperm can impregnate every woman on Earth. In two weeks, a single human male produces enough sperm to impregnate every fertile woman on the planet.
Over a dozen skeletons were found in Benjamin Franklin’s basement. In 1998, an organisation called Friends of Benjamin Franklin House decided to restore the four-story Georgian house where Franklin lived in London. However, they discovered a gruesome sight – one of the workers found a human thigh bone. The authorities were brought in, and a total of remains from 15 people were found – 6 of those belonging to children, and all with holes drilled into their skulls. The skeletons date back to 200 years ago then, which was around the time Benjamin Franklin lived in the house. This is one of the most disturbing WTF facts.
The human heart can squirt blood 30 feet away. When the heart pumps blood throughout our system, it creates pressure so strong that when our arteries face sudden trauma, blood squirts out.
The Pacu fish has human-like teeth. Say cheese! The Pacu is a South American fish known for its creepily human-like teeth. See for yourself. WTF facts, am I right?
At Harvard University, there is a book made with human skin. One of the WTF facts that’ll make your skin crawl: Since the 1930s, Des destinees de l’ame (Destinies of the Soul) has been housed at Harvard’s Houghton Library. The author, Arsene Houssaye reportedly gave the book to his friend, Dr. Ludovic Bouland, in the mid-1880s. Dr. Bouland allegedly bound the book with skin from an unclaimed female patient who died of natural causes.
The biggest tooth ever recovered from a human is 1.4” long. The Guinness World Record for the biggest human tooth goes to Indian cricketer, Urvil Patel. He had his large canine extracted and came home from the procedure to find that his 3.67cm long tooth was a record breaker. His tooth was nearly double the size of an average human tooth.
Human beings share 99.9 per cent of the same genes. You’re just 0.1% different from the person you hate the most. However, you’re just 0.1% away from being Beyonce.
Humans have farted 17 quadrillion times since the beginning of time. If you want a picture of how far the human race has come, you can measure it in farts. The average person farts 14 times a day. The next time you’re questioning your contributions to society hold on to these kinds of WTF facts.
A head of human hair is strong enough to support 12 tons. If you’ve treated your hair with anything other than your natural hair colour, you’d know that it is stronger than you think. Science has proof to back it up. According to a study, a strand of hair can hold up to 30 ounces, and an entire head of hair can withstand up to 12 tons (or, the size of two elephants).
You can’t breathe and swallow at the same time. Speaking of the physically impossible, one thing the human body can’t do is to breathe and swallow at the same time. The food and fluid that we swallow travels down the same part of our throat as the air we breathe in. It can only do one thing at a time.