People have wondered throughout history if there is another planet beneath the earth. Some ancient Greeks even believed it existed, though their beliefs were more mythological than literal. Modern science shows that our planet is composed primarily of layers of liquid magma, dense hot core, and other layers. However, one of the most popular theories of the 17th century was that our planet is hollow, and therefore, another world exists beneath it.
Plate tectonics
Earth's ongoing process of platetectonics is responsible in part for the formations today of mountains, oceans, as well as incandescent volcanic eruptions. However, at some point in the future plate tectonics may cool down enough to stop the planetwide conveyor belt, which will end the process that is reshaping our planet.
Habitable zones
Earth is an example planet with a habitable region under its surface. The solar irradiance as well as the planetary brightness determine the boundaries of the zone. The upper limit is at a value of 0.53 times the solar constant. This is equivalent to 1.37 astronomical units.
FAQ
What is the most intriguing fact about the human anatomy?
Two eyes, two ears and two nostrils are part of our bodies. We also have four limbs: a mouth, nose, penis, and four limbs. You're correct, there are more than 50 parts in our bodies. But, one thing is missing. A heart.
A heart is a pump, which circulates blood throughout our bodies. Blood travels through the arteries and veins, carrying oxygen and nutrients to the cells and removing carbon dioxide and waste products.
Each minute, the heart pumps 5 liters of blood. This is equivalent to a person drinking 2-3 cups coffee daily.
Blood flows throughout the heart 24 hours per day, 365 Days a Year. While you are sleeping, your heart beats about 100 times per second.
You can tell whether someone is healthy or unhealthy because of the color of their skin. Capillaries are tiny blood vessels visible on the skin's surface. These small vessels carry blood away from the large blood vessels in the skin back to the heart. The skin becomes blue-colored or purple when blood flow is restricted.
People suffering from sickle cell disease have no red blood cells. Their blood becomes very sticky and hardened, leading to serious illness.
You can use a bandage to stop bleeding if your cut is severe. Blood must flow in order for the wound to heal properly. Doctors place a needle in the wound and insert it through the skin. This allows the blood from the injured area to drain.
A doctor can also insert tubes (catheters), into an artery in the vicinity of where blood clots form. This keeps patients alive until the clot has broken up naturally.
What is the most secretive location in the entire world?
It may surprise you to hear the answer. It might even make you uncomfortable because it challenges our perception of reality and how we live. However, there's a reason for this place to exist. It's not what we would expect.
It was known as the City of God to the ancient Greeks. According to the Bible, it was called the City of Destruction.
It's also known as Kashi (Kashmir) in India. It is also called Novgorod in Russia.
However, in America it is called The Town that Disappeared.
A small community of 1200 people in western New York State vanished. It was abandoned without any remains, including no bodies, cars, or houses. The only thing that survived was a road sign, which pointed to its former location.
This tiny town vanished without any trace. Some say the earth swallowed it up. Others claim that a meteorite hit destroyed it. Others claim it was taken away by aliens.
The people of this once-thriving community, however, are positive that the town won't disappear forever. They just moved to another city.
You can even track the disappearance of Zugspitz on a dedicated website.
So where is this town? Well, it's in Switzerland!
Zugspitze lies on the border between Austria and Germany. Lake Zugspitze lies just above the summit of the mountain.
I have always been fascinated by the fact that so many towns have vanished, but some remain. Why do some disappear while others survive? I decided to investigate.
I was curious about the disappearing towns. Is it possible for a place to vanish? How can one place become extinct?
It turned out that there are many theories about disappearing towns. One theory says that a town disappears when all the buildings are demolished. Another theory is that the town moves to another place. A third theory states that the town didn't exist at all.
The fact is that hundreds of towns all over the world have been swept away by the ground, despite theories to the contrary. This video examines the past and present status of these areas.
Did you know that there are approximately 1.6 billion metric tons of trash produced every day in the world?
According to the United Nations, the average person produces over 2.5 pounds of daily waste.That adds up to over 25 billion pounds of garbage per year!
The majority of this garbage ends up in incinerators or landfills. But what happens when the dumpsters become full? Most of that trash is shipped out of the country. The trash is then sent out of the country and dumped in countries where it pollutes ecosystems. But, one man has now discovered exactly where this rubbish goes. Mike Sexton is his full name. He is the owner of Waste Watchers. His job involves monitoring the movements and routes of trash trucks across North America. He then reports back to us on what happens next.
Sexton said he enjoys his job. CNN interviewed Sexton and said that he has a lot of fun. "You know, we see these big rigs come through town, and we'll follow them. "Sexton started following truck driver almost 20 years back.
He said, "I fell in love with it."
Sexton loved the story about the driver who pulled over at an abandoned gas station close to Los Angeles. Sexton said that the man was searching for a place to store his stuff. "He saw the building as he drove down the road. So he backed up and went inside. "There were two huge roll-off containers there filled with stuff. The guy took everything out and started filling up the truck again. "Then he took out everything and began to fill up the truck. There were a bunch of old tires, rags, furniture, mattresses, boxes, bottles, cans, and whatever else. "It was just a total mess. It had been cleaned up before he arrived. There wasn’t trash everywhere."
This begs the question: Why? This particular spot used to be a recycling center. People would drive there to recycle their trash. Sexton explained that people would bring home their household items, and then take them to the building. After they were done, they would dispose of the empty containers.
You might see this happen hundreds of times a day. This can happen hundreds of times a week.Eventually, the truck becomes so overloaded with junk that it stops running. The truck eventually stops running and the owner decides that it is time to get rid of the vehicle.
However, trash is not the only problem on our planet.
The majority of these particles are made of small pieces of plastic. Others get washed into rivers or oceans.And when they reach the ocean, they often end up in the stomachs of fish.
Experts warn that the world may soon face a shortage of food if we don't make any changes. Experts warn that if we continue to go the same way, we won't make it. However, scientists and most people aren't worried.
What are 5 interesting facts about the liver?
The liver is responsible both for breaking down toxins as well as storing vitamins, minerals. It helps to regulate blood pressure and keep our bodies temperature stable.
We hear it all the time: "I feel sluggish today" or "my head feels heavy". These symptoms could be signs of liver problems.
Common signs include yellowing skin, dark urine, fatigue, nausea and vomiting, weight loss, stomach cramps (yellow coloration), itching, and jaundice (yellow colouration). These aren’t the only warning signs. You should immediately consult your doctor if you have any of these symptoms.
The liver, an essential organ, is vital. It is an important organ that plays a vital role in detoxification.
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The average adult human liver weighs approximately 1,400 grams.
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At birth, the liver of a baby can be half as big as an adult's. It grows to be about four times bigger by age three than an infant's.
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The liver is located just below the rib cage on the left side of the abdomen.
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The liver has 16 main lobes, with many smaller lobules within the lobes.
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The liver contains about 10 million individual red blood cells.
Statistics
- "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)
- Your mouth makes a lot of saliva every day It might seem like way too much, but your salivary glands typically produce anywhere from 0.5 and 1.5 liters a day, according to a 2009 study published in the Journal of Medicine and Life. (romper.com)
- In fact, according to the American Academy of Ophthalmology, you make 15 to 30 gallons of tears each year, which is insane when you think about it. (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)
- You spend about 10% of your time awake blinking (romper.com)
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How To
What's the scariest movie ever made?
It's likely that 10 people will give 10 different answers when asked about their favorite scary movies.
Some people love horror films. Others enjoy sci-fi flicks. Some prefer comedies.
No matter what you like, we all have seen some truly scary movies.
These are ten of most terrifying scary movies ever made, including the classic Halloween and the modern Paranormal Activity.
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"Cabin fever" - "Cabin fever" is one of the most terrifying zombie movies ever made. It portrays a virus that can cause humans to turn into zombies.
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"Thir13en Ghosts", a story about a group of teenage ghost-possessed teenagers, is based on the true story Jack the Ripper.
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"Pulse" is a thriller about a man who finds himself trapped in his apartment during violent crime sprees. He must defend his home from the attackers who will only use the items he has.
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"The Descent" - One of the first found footage horror movies, "The Descent" follows a group of strangers venturing underground for an adventure. But things quickly go horribly sour once they arrive.
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"Get Out" - Jordan Peele is known for making one of the most frightening horror films ever made in 2017. "Get Out" depicts a young black photographer visiting his white girlfriend's family for the holidays. Dark secrets are revealed when he arrives at his destination.
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"Paranormal Activity", (2007). "Paranormal Activity", one of the very first found-footage movies. It featured a new twist on ghost stories, starring Katie Featherston.
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"Audition” in Japan means to give a speech before an audience. Kiyoko is high school student and waits to learn if she will become a popstar.
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James Wan created the "Saw" series after years of making low-budget horror films. He was tired of finding new ways to shock audiences. Jigsaw was created by Wan, who decided to take a break.
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"Tales From the Crypt", "Tales From the Crypt", "Tales From the Crypt," - "Tales From the Crypt", becomes more frightening with each passing year. Hollywood has made numerous sequels featuring the crypt keeper terrorizing various US cities over the years.
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"Carrie" (1976). "Carrie", introduced viewers to Telekinesis, an amazing supernatural ability. Carrie White can move objects just by thinking about them.