
It is fascinating to discover bizarre facts about the human body. For example, an adult human's skeleton replaces itself every ten years. It has four blood groups and 206 bones. We also have two kidneys. In fact, the human body has two kidneys.
The adult human skeleton changes every ten year
The human skull undergoes constant remodeling and rebuilding through adulthood. Bone remodelling and repair are made possible by bone cells. A human's bone tissue is nearly replaced every day for the rest of his or her life. Osteoblasts are bone cells that break down bones to make new ones. This process, known as bone remodeling is measured using a bone density measurement.
It has two lungs
Two lungs or lobes are located in the chest cavity. These organs exchange oxygen and remove carbon dioxide. The membrane that covers each lung is called the pleura. It is connected by the mainbronchus to the heart, trachea and lungs. Pleural membranes, which are thin, light and elastic, provide an air filter system. They also allow air to enter the lungs through the mouth and nose.
It has two earlobes
Despite the similarities between them, human ears can be quite different in terms of their size, shape and color. The complex network of structures in the earlobe allow us to hear, see, and move. Men's ears are typically larger than women's ears. The average ear length measures 2.5 inches. The earlobe measures 0.74 in long and 0.77 in wide. According to studies, the ear lobes grow larger as we age.

FAQ
Ever wonder how much trash gets produced each day around the world?
According to the United Nations the average person creates more than 2.5 lbs of waste daily. That adds up over 25 billion kilos of garbage every year.
Most of this rubbish ends up in landfills or incinerators. But, what happens when those dumpsters fill up? It goes to the United States, where most of it is exported. It is then shipped out and dumped in other countries. This pollutes the ecosystems. But now we know, thanks to one man. Mike Sexton is his full name. He is the founder of Waste Watchers. He watches over trucks that transport trash across North America. He then reports back about what happens next.
Sexton says he finds his job very satisfying. CNN spoke with Sexton that they have a lot fun. "We see these big trucks coming through town, so we'll keep following them. "Sexton began to follow truck drivers around 20 years ago.
He said, "I fell in love with it."
Sexton's favorite story was about a driver who stopped at an abandoned gas station in Los Angeles. Sexton recalls, "The guy was searching for somewhere to put his loads." "He saw the building as he drove down the road. He backed up and entered the building. "There was a pair of large, full-sized roll-off boxes. The man removed everything from the truck and started to load it again. He then looked around and decided to load everything. There were many old tires, furniture, rags and mattresses. "It was just an absolute mess. It had been cleaned up before he arrived. There was not a single piece of trash.
This is the reason why it happened. The answer is that this location was once part of a recycling facility. People who knew about it would drive to this location to recycle their garbage. "They'd bring their household items and take them to this building," Sexton explained.And after they finished, they would leave the empty containers behind.
This can happen hundreds of times a week. The truck can be stopped running if it is so full of junk that it has to come back hundreds of times per week. The owner eventually decides to dump the truck.
Trash isn’t the only problem we face on the planet.
Plastic pieces make up most of these particles. Others end up in rivers, oceans or the stomachss of fish.
Experts warn us that we may soon face an international food shortage if things don't change. Experts warn that "if we keep going the way we are, we're not going make it," although scientists agree that the world is heading toward disaster. Most people, however, don't seem to be concerned.
What is the most secretive location in the entire world?
It may surprise you to hear the answer. You might be uncomfortable with the truth of it, as it may challenge your perception of reality. But there is an explanation for why this place exists, and it's not what you would expect.
The ancient Greeks called it the City of God. It was called the City of Destruction by the Bible.
It's also known as Kashi (Kashmir) in India. It is called Novgorod (Russia).
It's called The Town That Has Disappeared here in America.
One small New York State town with just 1,200 people vanished. With the exception of a road marker pointing to its former site, there were no remains: cars, bodies, houses.
This tiny community disappeared without leaving any clues as to where it went or when. Some believe the earth swallowed them up. Others believe it was destroyed by a meteorite. Some claim that it was destroyed by a meteorite strike. Others still believe it was stolen away by aliens.
Despite what may have happened, the people who lived in this once-thriving area are confident that their town will not be lost forever. They just moved to another city.
Even a website exists to help track down the disappearances of the lost city Zugspitz.
So, where exactly did this town go? It's actually in Switzerland!
Zugspitze lies on the border between Austria and Germany. A huge lake, Lake Zugspitze, is located just beyond the summit.
It has always fascinated me that so many towns have disappeared, yet some still remain. What is the difference between some towns that disappear and others that survive? I set out to find out.
I wanted more information about the mysterious disappearing of towns. Is it possible for a place to vanish? How does one place go extinct?
There are several theories behind the disappearing of towns. One theory is that a city disappears after all buildings have been demolished. Another theory says that the town just moves. A third theory claims that the town never existed at all.
No matter what theories you may have, there is no doubt that many towns across the globe were swallowed by the ground. This video explores the history of these towns and examines their current state.
What are the darkest secrets of Hollywood?
Hollywood is filled secret societies. Many secret societies are cult-like and follow rigid rules. Others are just clubs for people with common interests.
There are also other, more evil organizations that control large parts of the industry. These include companies like the MPAA ("Motion Picture Association of America"), which determines film ratings. The RIAA ("Recording Industry Association of America") sets music licensing fees.
Numerous unions or guilds also represent producers, writers, actors, etc. These large corporations control the majority of major film studios and television networks.
It doesn't really matter how secretive an organization may appear, there is always someone who knows exactly what they do. However, we shouldn't fear them.
Instead, we should embrace these facts. Because they can help us make better decisions.
These experts tell us which movies are most likely to succeed, which songs will be in demand, and what books will sell the best.
These help us to decide what we'll watch, read, listen, and buy.
We can trust their advice and we can ignore it if it contradicts our values.
Because we have chosen to ignore their power, they are even more powerful. They are the ultimate judges of taste.
They can be ignored if you don’t like what they have to say.
Let's now look at some lesser-known, but still very real Hollywood secret organizations.
You can see why they are so vital.
Is there a more mysterious place than the Earth itself?
Antarctica is the world's most mysterious place on Earth.
We find this place so fascinating. Because it is unlike any other spot on Earth.
It is remote and difficult to reach. It is not what you see.
This natural wonder is also home to some of the strangest wildlife species.
Let's find out how this mysterious destination became so famous.
Antarctica, The South Pole
Antarctica is named for no one. Others believe it means "land with ice". Others think it comes from Greek mythology.
Antarktis is the name Antarktis was given to an island in ancient Greece by Zeus' twin brothers. According to one source, one of the twins was conceived in winter. This is why the word "antarctic" was chosen.
Others believe that it is the Greek word anti, which means against, and tropos, which refers to turning. This would mean that the land was turned away by the sun.
No matter the reason, Antarctica is a place that has always fascinated people.
It is the continent with the lowest, windiest and highest temperatures. It is too cold for trees, plants and animals.
Yet, life is abundant in this frozen wilderness.
It is home to approximately 90 percent of all life on Earth. You can find approximately half the world's species of animal and plant plants here.
What is Antarctica? Here, water freezes into ice instead of evaporating into the air.
This creates large masses of ice that float above the ground.
These floating glaciers make up 80%. They are growing in size every year.
The Antarctic ice has grown 60 feet so far since 1960.
If the melting continues, sea level could rise up to 200ft. It could result in massive flooding all over the world.
This does not mean that everyone is wrong. Global warming may be beneficial for some scientists. They believe that global warming will lead to melting ice sheets faster and floods that can flush toxic chemicals out of our soils and bodies.
Others cautioned that this theory sounds too science fiction.
Statistics
- A 2012 paper published in the Proceedings of the National Academy of Sciences reported that people blink about 15 to 20 times each minute, meaning, if you do the math, you spend about 10% of the time that you're awake blinking. (romper.com)
- In one 2014 study published in the Archives of Medical Science that sought to study the prevalence of these mites, research showed that 41% of the people had them hanging out in their eyelashes. (romper.com)
- "It is estimated that 75% of people have at least mild gum disease, with the most common symptoms being bleeding when brushing, bad breath, and dark and swollen gums," Dr. Ron Baise, a London-based dentist, tells Romper. (romper.com)
- You spend about 10% of your time awake blinking (romper.com)
- It might not sound like something that's truly plausible — and it is quite rare — but according to a 2015 study published in the Asian Cardiovascular & Thoracic Annals, it's possible to hurt yourself and even break a rib just by sneezing. (romper.com)
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Secret societies and clubs in American history
American History is fascinating because of many reasons. One reason is because of the mystery surrounding them. Their impact on our society is another reason.
Secret societies and clubs have been used throughout America’s history to spread ideas that would otherwise be taboo. Anti-Semitism is one example of such ideas. These groups also promoted political ideologies such communism, socialism, and other socialist ideas.
The Ku Klux Klan was the most famous American group. This group was formed after the Civil War ended in 1865. Its purpose was to protect white men from African Americans.
Other organizations that were created in this period include the Knights Templar (Freemasons), and Odd Fellows. These organizations shared the same beliefs and goals.
Another interesting aspect about secret societies is their ability to restrict memberships to men only. These secret societies also included women. These women included Emma Goldman, Margaret Sanger, and Susan B Anthony.
Other secret societies, aside from the ones mentioned, did not share the same ideals. In 1832, the Order of Skull & Bones was formed. Their goal was to create an elite group within the United States.