There are many lies and myths that most people believe are indisputable and proven scientific facts, but they are not.

In this report, which was published by Reader's Digest in its Australian version, writer Marisa Laliberti reviews some of this misinformation, and reveals what science says about it:

Fallacy 1: An ostrich bury its head in the sand

In fact, an ostrich may die asphyxiated if it actually buries its head underground when it feels fear.

According to the San Diego Zoo in the United States, an ostrich puts its head and neck on the ground if a predator approaches them.

In this case, the light color of her head blends with the color of the soil, and from afar it appears as if she is burying her head underground.

Fallacy 2: Your blood is blue

One of the widespread fallacies is that the blood that circulates in the arteries and veins is blue, but it turns red when exposed to air.

Since the veins are greenish-blue, this theory seems logical, but the truth is that human blood is red, both inside and outside the body.

The color tends to be bright red when the blood is rich in oxygen, and darker when the amount of oxygen is low.

The tissues that cover the veins affect the absorption and distribution of light, which is why the blood appears blue.

Fallacy 3: Humans use only 10% of their brains

The claim that we use only 10% of our brain capabilities is scientifically false, and in fact, fMRI scans can clearly show you, that more than 10% of your brain lights up when you say some words.

Fallacy 4: The Great Wall of China Sees the Moon with the Naked Eye

Although many believe that the Great Wall of China can be seen with the naked eye of the moon, this claim is completely unfounded.

Astronauts have confirmed that this great edifice can only be seen from space at low altitudes.

Fallacy 5: Chameleon changes color for camouflage

Chameleons can actually change color by stretching and loosening their skin cells that contain some kind of crystal matrix, but they can't actually turn into whatever color they want to match their surroundings, and the change has nothing to do with camouflage.

Chameleons tend to change their color mainly for communication, as dark colors indicate aggression (when a female does not want to mate), as well as temperature control, as light colors reflect the outside heat.

Fallacy 6: a goldfish’s memory only lasts 3 seconds

The fish is smarter than we thought, as one study found that freshwater African tilapia can remember where food is in its tank after being placed in another tank for 12 days.

Another study looked at the extent of the goldfish’s ability to distinguish between two different classic songs. After more than 100 sessions, it was found that the fish was biting the thread associated with the correct song by 75%.

And if we assume her memory really lasts 3 seconds, then this kind of training wouldn't be possible.

Fallacy 7: Lightning never strikes the same place twice

The Empire State Building suffered eight blows in succession within 24 minutes during a thunderstorm.

In fact, there is nothing preventing lightning from striking the same place more than once in a short time.