5 facts that everyone thinks are true but turn out to be completely wrong

Knowledge changes over time, so don't be surprised when the facts you think are right turn out to be completely wrong.

Talk a lot but still have to remind you, it is the world - more precisely, our understanding of the world - always changing. At this point your knowledge may be right, but over time it is miserably wrong that if you do not regularly update, you may not know.

Here are the facts like that. They were true in the past, but now they are completely wrong.

1. Blue whale is the largest creature on the planet

The largest creature Earth is not a blue whale but a fungus.

Blue whale is a very terrible animal. 30m long, weighs a hundred tons, it has no opponent in the animal world both underwater and on land. Even the whale's heart weighs more than 1 ton.

However, it is not a blue whale. The title belongs to a mushroom , called Armillaria ostoyae.

Looking outside, Armillaria ostoyae is no different. But if you look at the structure, this fungus has a very special set of roots, when each mushroom is linked together through a root. This means that a mushroom that grows at one end of the forest will have the same roots as the fungus that grows on the other end. And since it is rooted, just a mushroom foraging is enough to feed a whole family.

Due to this ability, a population of Armillaria mushrooms, although composed of many mushrooms, are still recognized as a single body - rather than Armillaria's "large body" .

On Earth there are so many 'big bodies' , one of which is the "fungal individual" found in the Malheur National Forest, Oregon State (USA), considered the largest planet. This "big body" is up to 10 square kilometers - equivalent to 0.14% of the forest area.

2. Can cockroaches survive the nuclear war?

Cockroaches will also "up" if the nuclear disaster breaks out.

Cockroaches are very tough, very persistent species. They can fast for months, even lose their heads and still live for at least 2 weeks (which is why they died because they didn't have a mouth to drink).

Also because of the impressive survival ability, for a very long time, humans believed that cockroaches could survive even nuclear war. However, in 1963, Mary Ross and DG Cochran scientists tried to test the tolerance of radioactive cockroaches, and the truth was not as we thought it would be.

Turns out, cockroaches will also "go up" if the nuclear disaster breaks out. However, cockroach's ability to tolerate radiation is 10 times stronger than us, so don't underestimate them.

3. Is flu the most common disease?

New tooth decay is the most common disease.

Anyone in the world who doesn't have colds at least once, especially when the weather gets cold. However, if you think this is the most common disease in the world, you are wrong.

Turns out, there is an extremely common disease that you can get at any time, no matter how cold or hot it is. That's . tooth decay.

According to Marcenes's research from Queen Mary University (London, UK), there are at least 2.5 billion adults and 621 million children in the world are suffering from tooth decay. If proportionally calculated, this number is equivalent to 41% of the world population already.

4. The largest pyramid in the world is Egyptian

The title of the world's largest pyramid actually belongs to the Great Pyramid of Cholula.

The Egyptian symbol is the pyramid, so everyone thinks that the world's largest pyramid must be theirs. In fact, there are some documents that were previously thought to be the same.

But over time, scientists have other conclusions. The title of the world's largest pyramid actually belongs to (or Tlachihualtepetl) of Mexico. Cholula is twice as big as Egypt's Great Pyramid of Giza. As for the bottom area, the difference is 4 times.

5. Elephants are the only animal in the world that cannot dance

In fact, there are many species of 4-legged animals that cannot dance, like hippos, rhinos, or sloths.

Elephants are a strange animal. Although there are 4 legs with knees and giant muscle bundles, they can't jump. In order to lift the heavy body to tons, only that is not enough.

But it turns out that elephants are not the only animals that suffer. In fact, there are many species of 4-legged animals that cannot dance, like hippos, rhinos, or sloths. However, it is slightly different if these two species run at high speed, sometimes their 4 feet do not touch the ground.