Throughout history, people have wondered if there is another world under the earth. Although some ancient Greeks believed that it existed, their beliefs were more mythological and literal than literal. Modern science now says that our planet is composed of a series of layers consisting of dense hot cores and liquid magma. 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 is currently undergoing a continuous process of plate tectonics. This is responsible for the formations of mountains and oceans as well as the incandescent volcanic eruptions we see today. In the future however, platetectonics will cool to the point that the planetwide conveyor will stop, ending the process which reshapes the planet.
Habitable zones
Earth is an example planet with a habitable region under its surface. The inner and outer limits of the zone are determined by the solar irradiance and the planetary luminosity. The solar constant's upper limit is 0.53x. This equals 1.37 astronomical units.
FAQ
What is your most secretive community?
The answer may shock you. It might even make you uncomfortable because it challenges our perception of reality and how we live. But there is an explanation for why this place exists, and it's not what you would expect.
It was also called the City of God in ancient Greek. It was called the City of Destruction by the Bible.
It's also known as Kashi (Kashmir) in India. It's also known as Novgorod in Russia.
However, in America it is called The Town that Disappeared.
One small New York State town with just 1,200 people vanished. A road sign pointing to the former location of the town was all that was left, except for a few bodies and cars.
This little town disappeared, leaving no clues about where it went or when. Some say the earth swallowed it up. Some claim it was destroyed by a meteorite impact. Some believe that it was taken by aliens.
The people of this once-thriving community, however, are positive that the town won't disappear forever. They had just relocated to another town.
You can even track the disappearance of Zugspitz on a dedicated website.
So where is this town? It's actually in Switzerland!
Zugspitze is located on the border between Germany and Austria. Lake Zugspitze lies just above the summit of the mountain.
It's always fascinated me how so many towns disappear, yet others remain. Why do some disappear while others survive? I decided that I would investigate.
I was interested in learning more about these mysterious towns that are disappearing. What is the secret to a town's disappearance? How can one place become extinct?
It turns out that there are several theories about the phenomenon of vanishing towns. One theory holds that a town disappears if all its buildings are demolished. Another theory suggests that the town simply moves somewhere else. A third theory claims that the town never existed at all.
Theories aside, the fact remains that dozens of towns around the globe have been swallowed up by the ground. This video examines both the history and current status.
How does the brain control the functions in your body?
The brain relays messages to other parts of the body to ensure their functionality. The brain controls everything that happens in your body. It tells your stomach how to digest food and your lungs how to inhale oxygen; it also tells your arms, legs and feet to move.
Your brain is made up of billions upon billions of nerve cells that are connected together in groups called neuronal groups. Action potentials are electrical signals that neurons send to one another. Each neuron is covered by a cell membrane. Inside the membrane are channels that allow ions such as sodium and potassium to enter and leave the cell. Ion movement is what causes the neurons to fire.
When a neuron is activated, neurotransmitters release chemicals into the space between it and the next neuron. Neurotransmitters are able to bind to receptors in the second neuron. This opens ion channels that allow ions to flow in and out. As a result, the second neuron fires too.
Neurotransmitter releases occur when a presynaptic neurons receives an input from another neuron. The impulse travels along the synapse connecting the two neurons. The transmitter binds at the receptors of the post-synaptic Neuron and triggers its firing.
Neurotransmitters are important for communication within the nervous system. They are also responsible for coordinating activity between various parts of the brain.
Have you ever wondered what amount of trash is generated each day worldwide?
The United Nations states that an average person produces more than 2.5 pounds of waste per day. That's over 25 billion pounds of garbage each year!
Most of the trash ends up at incinerators and landfills. But, what happens to those dumpsters? The majority of this rubbish is sent 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 real name. He is the founder of Waste Watchers. He watches over trucks that transport trash across North America. He then reports back to us on what happens next.
Sexton says he finds his job very satisfying. CNN spoke with Sexton that they have a lot fun. "We'll be following these big rigs through town. "Sexton started following truck drivers nearly 20 years ago.
He stated, "I just fell in Love with It."
His favorite story is about a driver that pulled into an abandoned gas station just outside Los Angeles. Sexton remembered, "The man was looking for somewhere to put the load." "He drove down the road to see this building. 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. "Then, he took everything out and started filling up the truck again. There were a bunch of old tires, rags, furniture, mattresses, boxes, bottles, cans, and whatever else. It was a complete mess. But it had been cleaned before he arrived. There wasn't any trash anywhere."
This begs the question: Why? It is because the location used to belong to a recycling centre. People who found out about this facility would drive to it to recycle their trash. Sexton explained that they would bring household items and take them to the building. Then, after they were done, they would empty the containers.
You might see this happen hundreds of times a day. This could happen hundreds times per week. Finally, the truck stops running completely due to its excessive junk. The owner eventually decides to dump the truck.
Trash, however, isn't the only problem facing our planet.As you may have noticed, things are getting worse.According to experts, pollution levels have risen dramatically in recent years.More than half of all water bodies on Earth are polluted.Pollution from industrial chemicals has increased by more than 30 percent since 1980.Even the air we breathe is becoming increasingly toxic.A study by the World Health Organization found that the average person inhales around 100 million particles daily.
Most of these particles are made up of tiny pieces of plastic.Some of these plastics end up in landfills or incinerators. 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. One expert said, "If we keep going as we are going, we're never going to make it," but most people don’t seem concerned.
Here are 5 fascinating facts about the liver
The liver is responsible both for breaking down toxins as well as storing vitamins, minerals. It helps maintain a steady body temperature and regulates blood pressure.
We hear it all the time: "I feel sluggish today" or "my head feels heavy". These symptoms may be a sign of liver disease.
You may notice symptoms such as dark urine, yellowing skin and fatigue. These aren't all warning signs. If you experience any of them, make an appointment with your doctor immediately.
The liver is an important organ. It is an important organ that plays a vital role in detoxification.
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The average adult liver weighs 1,400g.
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The size of a baby's liver at birth is approximately half that of an adult. It grows to be about four times bigger by age three than an infant's.
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The liver can be found on the left side of your abdomen, just below the lower rib cage.
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There are 16 main lobes in the liver, but many smaller lobules are inside the lobes.
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About 10 million red blood cells are found in the liver.
Statistics
- In fact, nearly 24% of U.S. women are affected with one or more pelvic floor disorders, according to research funded by the National Institutes of Health. (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)
- You spend about 10% of your time awake blinking (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)
- 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)
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American history is full of secret societies and clubs
Many reasons make American History's secret societies and clubs fascinating. One reason is because of the mystery surrounding them. Their effect on society is another reason.
American history has seen secret societies and clubs used to promote ideas that were otherwise taboo. Anti-Semitism is one example of such ideas. These groups also contributed to the spread of political ideologies, such as communism & socialism.
The Ku Klux Klan is the most prominent American organization. This group was established in 1865, after the Civil War had ended. Its purpose is to protect white people from African Americans.
Other organizations that were created in this period include the Knights Templar (Freemasons), and Odd Fellows. These groups all shared similar goals and beliefs.
Another fascinating aspect of secret societies was that their memberships were often limited to males. However, these groups had some female members. 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. The Order of Skull & Bones, for example, was established in 1832. Their goal: to create an elite American class.