The human ovum has a diameter of approximately 130 µm, being the largest nonsynthetic cell of the human body.

The mature ovum synthesizes special substances, gamones, which at first attract a crowd of sperm cells and make them move faster. As soon as at least one of the fastest ones penetrates the shell of the ovum, the rest of the male sex cells die under the influence of the same substances.

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One of the most unusual trees in the world is the rainbow eucalyptus.

It is distinguished from other species by its incredibly colorful bark, which is also constantly changing, making the trees look like fantastically alien.

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A frozen jellyfish.

But this is not the end of its life: due to the primitiveness of its anatomy and physiology, if the jellyfish melts, it will return to normal life.

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The world's first installation of horizontal bridge beams with a capacity of 1,000 tons

The rig was used in the construction of the Meizhou Bay Sea Bridge, which is part of the new Fuzhou-Siamen high-speed railway line in Fujian province in southeast China.

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Biological deception!

If you hold a water lily bud in your hand, the flower will think the sun is shining on it. And it will open.

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Have you ever seen a baby ferret?

Mankind domesticated ferrets more than 2,000 years ago. They used to be used for hunting. Hunters carried ferrets in small bags and launched them into rabbit holes to chase their prey.

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Hundreds of thousands of fish gathered in a huge ball and created a whirlpool when a diver tried to approach them.

This formation is a defense mechanism designed to scare away predators.

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Croatia. Lović Prekriški village in the fog.

This sleepy village seems lost in a sea of clouds. Only the tops of the trees and the church bell tower manage to break through the thick veil at dawn.

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Why can't mammoths be brought back to life using their DNA?

Because you can't bring anyone back to life with their DNA, because you need a living cell. DNA has the right spatial structure and the right chemical modifications, in addition to sequencing. Besides, no one knows how to synthesize DNA that long.

To clone a mammoth from the permafrost, there must be living cells in a piece of it, and that does not happen.

The oldest DNA that has been sequenced is 700,000 years old. But it is not a whole molecule, there were many pieces, the sequence was determined, and then they were assembled into a whole genome.

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Aadi Swarupa of Mangalore, India, can write in 11 different styles

Both parts of her brain function simultaneously, and she is able to use both hands equally. This skill is known as ambidextrous.

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A killer jellyfish the size of a fingernail.

It lives in Australia. Unlike other jellyfish, it has a brain and eyes. The consequences of encountering it are fatal, from paralysis to brain hemorrhage. Four tentacles, 5,000 stings. The venom is 100 times more dangerous than that of a cobra.

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Statue of Christ

Installed at the bottom of the Mediterranean Sea, off the coast of Malta, at a depth of 10 meters, in memory of the dead fishermen.

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A real geological wonder is the crater of the extinct volcano Nabiyotum.

It is known for its perfectly round basin, which makes it look really unusual and even slightly alien. It was nicknamed the "dog bowl" for its outlandish shape.

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Sloths are born and spend their entire lives in trees.

Climbing out of a tree is so difficult for a sloth that even if their cub falls down, the mother is unlikely to go after it.

And newborn sloths fall quite often, so zoologists have to take care of the babies at home.

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Alfred Heineken made a bottle of beer that could function as a brick for building in poor countries. 1963.

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If a chipmunk forgets where he put his supplies and has nothing to eat, he looks for a horned twig in the forest and hangs himself.

It is the only suicidal animal in the world.

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In the Pacific and Indian oceans live bright and poisonous fish Inimicus.

Inexperienced swimmers should stay away from Inimikus: they have glands near the spines of the dorsal fin that secrete a deadly neurotoxin.

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The freezing process of a bubble ❄️

Soap bubbles freeze quite quickly and can remain in this state for up to 20 minutes, depending on the composition of the mixture used.

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Cats step on the tracks of their front paws with their hind paws

Apparently, this is done to reduce the number of footprints so that to step only in places already checked with front paws. This rule is followed both when walking and running.

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