Not everything you hear is true, even if everyone believes it! Many common and interesting facts are not actually true, and they are nothing but lies!
In this article, we review some of the most fun and popular facts that science has debunked.
Common facts that many people believe, but they are fake!
1-Shark does not get cancer and tumors!
Contrary to popular belief, sharks can develop cancer. The myth that sharks' cartilages can be used in cancer treatment drugs, as they are the only organisms that have immune immunity against tumors, turns out to be false and false!
One shark researcher said that sharks are also cancerous, and eating products made from sharks will not cure the cancer.
Marketing shark cartilage as a cure for cancer is a misleading campaign for patients, and it leads to more sharks being killed with no real benefit.
2-NASA has spent millions developing a pen that can be used in space
Another very popular rumor is that NASA spent millions of dollars developing a pen that could be used in space, while the Soviets required astronauts to use the pencil.
The mechanical pencils chosen by NASA cost $128.89 each, and the public wasn't thrilled when they found out where their tax money was going.
Additionally, pencils' flammability and the tendency for their tips to separate and float apart made the switch to ballpoint pens a necessity.
Fisher's company invested $1 million to design the AG-7 Anti-Gravity "Space Pen," but "none of that investment came from NASA's coffers."
The agency was reluctant to purchase the product, but after extensive testing, they decided to purchase 400 products. A year later, the Soviets placed an order for 100 space pens.
The two competing agencies received the same 40% discount for their wholesale pens. Both paid $2.39 per pen instead of $3.98.
So while NASA was looking for an alternative writing instrument when the space pen appeared, they didn't overlook the possibility of using pencils and didn't invest a ridiculous amount in inventing the product.
3-Humans swallow 8 spiders a year while they sleep!
On average, humans do not swallow eight spiders a year while they are sleeping. Spider experts who spoke to Scientific American said such a claim was absurd and out of touch with reality.
In terms of spiders, we are very large creatures and a part of nature around them, and they look at us as rocks to avoid.
In addition, the vibrations of the sleeping human "snoring, breathing and heartbeat" are considered terrifying to spiders and push them to flee.
Another thing is having a spider walking around in your face will rarely leave you asleep, and you will almost certainly wake up and drive it away before it crawls into your mouth.
4-Einstein failed math class when he was young
When Einstein was shown an article about his childhood stating that he had failed at mathematics, he replied that he had mastered calculus before he was 15, and achieved high grades throughout his childhood education.
This myth may have stemmed from the fact that he failed the entrance exam at Zurich Polytechnic the first time when he still had a year and a half left to graduate from high school and had not yet mastered French.
Contrary to popular belief, he did well in the mathematics department, but language, botany, and zoology stood in the way of his success the first time. After he later graduated from high school, he was accepted into the Zurich Polytechnic in 1896.
5-Mickey Mouse is the brainchild of Walt Disney
Conversely, the credit for creating the character of Mickey Mouse goes to Walt Disney's close friend Ub Iwerks, although he declined to give him credit for it.
Iwerks created the character in 1928, after Disney lost the rights to its "first successful character," Oswald the Lucky Rabbit.
As Disney continued to create larger characters to expand the story of Mickey Mouse's creation and claim to be the brainchild of Walt Disney himself, Ewers left the Disney Studios, bitter at his friend's behavior.
In 1940, a decade after he had left, Iwerks returned. He and Disney rekindled their friendship and worked together until Disney's death in 1966.
6-Napoleon Bonaparte was a short man
Although his nickname was The Furious Short Man, Bonaparte was actually of average height during the time period in which he lived.
The popular perception of the diminutive general may have come in part from the successful work of British cartoonist James Gilray, whose satirical caricatures of "Little Napoleon" were so popular that Napoleon himself said that Gilray "did more than all the armies of Europe to humiliate him".
7-The Great Wall of China can be seen from space
Although this fact is very common and is still taught in Chinese schools to this day, but the Chinese astronaut, Yang Liwei, himself debunked this false fact by showing that the Great Wall of China cannot be seen from space despite its huge size.
8-The brain works at only 10% of its total efficiency
According to a 2013 survey, about 65% of Americans believe that we only use 10% of our brains, this belief is a common truth that is believed by a large number of people from different parts of the world.
,This is just a myth! According to neurologist Barry Gordon, he has shown that the majority of the brain is almost always actively working.
9-The tongue is divided into different parts according to different tastes
Surely you have studied this in school and all your life and you think that every part of the tongue is for a particular type of taste.
We regret to tell you that there are no different sections of the tongue for each different taste. Each tongue with its different parts senses different tastes.
10-Newton's apple is the reason behind his discovery of gravity
Isaac Newton didn't discover gravity because an apple broke it on his head. Instead, watch an apple fall and wonder why things always fall rather than fall or skew, an idea that inspired the universal law of gravitation.
When Newton saw the apple fall, he was in the orchard of his childhood home at Woolsthorpe Manor. He was studying at Cambridge University, but the school was temporarily closed due to the outbreak of the bubonic plague.
Present day elephants endure old environmental change. In excess of 180 different species, including mastodons, didn't