Scientific facts from the life of scientists. Scientific interesting facts about the world

We've tracked down scientific articles proving the benefits of owning a pet, and we're sharing the findings with you. For example, cats reduce rather than increase (as many thought) the risk of allergies in children.

Prevention of allergies in children

It used to be thought that having a cat or dog in the house increased the risk of allergies in a child. And if there is a hereditary predisposition, then the doctors recommended not to have pets. However, this view is not only outdated, now science has turned it around 180 degrees.

There is a growing body of research showing that children who grow up with pets (whether with a cat or a dog) are less likely to develop allergies and asthma.

Pediatrician, scientist James E. Gern, MD, from the University of Wisconsin-Madison conducted a study, checking the blood of children: immediately after birth and a year later. Children who grew up with a pet dog had much less allergies - 19% versus 33% - in those who grew up without pets. They also generally had lower levels of eczema. In addition, children raised with pets had higher levels of certain components of the immune system.

Reduced risk of death from heart disease

Several scientific studies have shown that heart attack survivors with pets live longer than heart attack survivors without pets.

Male pet owners are also generally less likely to suffer from heart disease.

In addition, there are studies proving that the risk of sudden death from a heart attack in pet owners is much lower. Researchers at the University of Minnesota have calculated that cat owners have a 30-40% lower chance of dying from a heart attack than those who live without pets.

Lowering blood pressure

Doctor Karen Allen conducted a study among 48 randomly selected brokers (working in a constant stressful situation). The study compared 24 pet owners and 24 non-pet owners and found that pets improved blood pressure and stress hormone levels better than drugs (ACE inhibitors).

Cholesterol Reduction

Back in the early 90s, research data were disseminated American Health Association that cat owners generally have lower levels of cholesterol and triglycerides in the blood. What's more, the study says that having a pet lowers these levels.

Too high triglyceride levels can potentially contribute to the development of atherosclerosis and myocardial infarction.

stress reduction

In one study, scientists showed that people given a stressful task showed less stress if they had their pets with them. This level was even lower than in the presence of a spouse or acquaintance. Apparently, because pets love their owner unconditionally and do not appreciate his actions.

In general, there are several studies that have been conducted to prove that pets play the role of a natural “medicine”, providing a calming effect in unavoidable stressful situations. For example, one study looked at how long it takes for a person's blood pressure and heart rate to return to normal after stress. It showed that dog and cat owners experience less psychological and physical stress and are able to recover faster. Therefore, it is not at all surprising that some people take their beloved pets with them everywhere.

General health promotion

In the early 1990s, a team of researchers from the University of Cambridge found that pet owners improved their overall health in as little as a month. These positive changes continued throughout the 10 months of the study. It has been observed that pet owners are less likely to suffer from colds or headaches. Later, it was found that male owners of cats or dogs have a more even pulse and stable blood pressure than those who have not yet acquired a pet.

There are also scientific observations showing a generally longer life expectancy for pet owners.

Incredible Facts

Science is an amazing thing. Everyone knows that everything that exists is made up of atoms. The nucleus of an atom has protons and neutrons, and is it itself surrounded by electrons that revolve around the nucleus? like little satellites. Interestingly, atoms are 99.99% empty space.

This screen is made of atoms, and these atoms are practically nothing. So why can't you see through the screen? And how can we even see, feel and stand on anything?

It's all about power. The atoms on the table actually repel the atoms in your hand. When you touch something, you actually experience a repulsive force.

Here are some more amazing scientific facts you didn't know.

1. If fill a thimble with matter from a neutron star, it will weigh almost 100 million tons.

2. Pseudoblindness is a phenomenon in which blind people develop a physiological response to visual stimuli (such as an angry face) despite being unable to see them.

3. If people used Newton's formulas instead of Einstein's theory of relativity, GPS calculations would differ by several kilometers.

4. Most cold place in the known universe is on Earth in the laboratory. Scientists have succeeded in freezing atoms using laser cooling. This resulted in temperatures in the billionth power of absolute zero.

5. In the human brain more synapses than stars in the Milky Way.

6. If it were possible to remove all empty space in atoms, then Everest could be put in a glass.

7. The compound that gives raspberries their flavor is found throughout our galaxy.. You heard it right, the Milky Way tastes like raspberries.

8. According to the Hafele-Keating experiment, time runs faster when flying west than when flying east(relative to the center of the earth).

9. Every cell in your body has been dividing since life began on Earth. And all this division will end with your death, with the exception of the cells that you pass on to your descendants (1 per child) and certain circumstances (for example, organ donation).

10. The only reason you are able to read this article is because hundreds of miles of fiberglass cables lie on the ocean floor.

11. Grease in your knees is one of the most slippery substances known to man.

12. When you remember some event in the past, you remember not the event itself, but rather the last time you remembered it. In other words, you have a memory of memories. For this reason, people's memories are often inaccurate.

13. Pluto has only made 1/3 revolution since it was discovered.

14. If the Earth were the size of a billiard ball, it would be smoother (there would be less oscillation between high and low points on its surface).

15. Human sweat is odorless but since bacteria feed on it, the smell comes from their waste products.

Amazing Facts

16. Your lungs have the same surface area as a tennis court.

17. There is no way to scientifically prove that we are not part of a computer simulation.

18. The human body emits more heat per unit volume than the sun.

19. None of your ancestors died before successfully producing offspring.

20. Stomach acid is strong enough to dissolve zinc.

21. Occur on the Sun fiery whirlwinds larger than the Earth.

22. You never really touch anything. Your atoms simply repel the atoms of other objects (most of which are empty space).

23. Your The brain is made up mostly of water and fat..

24. Water conducts electricity only due to pollution. Perfectly pure water does not conduct electricity.

25. Of the four basic forces (gravity, electromagnetic force, strong nuclear and weak nuclear), gravity is the weakest, easiest to observe and least understood.

Newborns usually have about 270 bones, most of which are very small. This makes the skeleton more flexible and helps the baby move through the birth canal and grow quickly. As we grow older, many of these bones fuse together. The skeleton of an adult consists of an average of 200-213 bones.

2. The Eiffel Tower grows 15 centimeters in summer

The huge structure is built with temperature expansion joints, thanks to which the steel can expand and contract without any damage.

When steel is heated, it begins to expand and takes up more volume. This is called thermal expansion. Conversely, a decrease in temperature leads to a decrease in volume. For this reason, large structures such as bridges are built with expansion joints that allow them to change in size without being damaged.

3. 20% of oxygen comes from the Amazon rainforest

Flickr.com/thiagomarra

The Amazon rainforest covers 5.5 million square kilometers. The Amazonian jungle produces a significant portion of the Earth's oxygen by absorbing vast amounts of carbon dioxide, which is why they are often referred to as the lungs of the planet.

4. Some metals are so reactive that they explode even on contact with water.

Some metals and compounds - potassium, sodium, lithium, rubidium and cesium - exhibit increased chemical activity, therefore they can ignite with lightning speed upon contact with air, and if they are lowered into water, they can even explode.

5. A teaspoon of a neutron star would weigh 6 billion tons.

Neutron stars are the remnants of massive stars, consisting mainly of a neutron core covered with a relatively thin (about 1 km) crust of matter in the form of heavy atomic nuclei and electrons. The cores of stars that died during a supernova explosion were compressed under the influence of gravity. This is how superdense neutron stars were formed. Astronomers have found that the mass of neutron stars can be comparable to the mass of the Sun, despite the fact that their radius does not exceed 10–20 kilometers.

6. Each year, Hawaii moves closer to Alaska by 7.5 cm.

The earth's crust consists of several huge parts - tectonic plates. These plates are constantly moving along with the upper layer of the mantle. Hawaii is located in the middle part of the Pacific Plate, which is slowly drifting in a northwesterly direction towards the North American Plate, on which Alaska is located. Tectonic plates move at the same speed as human nails grow.

7. In 2.3 billion years, Earth will be too hot for life to exist.

Our planet will eventually become a vast desert, similar to today's Mars. For hundreds of millions of years, the Sun has been heating up, getting brighter and hotter, and will continue to do so. In about two billion years or more, temperatures will become so hot that the oceans that make Earth habitable will evaporate. The whole planet will turn into an endless desert. As scientists predict, in the next few billion years, the Sun will turn into a red giant and completely swallow the Earth - the planet will definitely come to an end.

Flickr.com/andy999

Thermal imagers are able to identify an object by the heat it radiates. And polar bears are experts at keeping warm. Thanks to a thick layer of subcutaneous fat and a warm coat, bears are able to endure even the coldest days in the Arctic.

9. It takes light 8 minutes 19 seconds to travel from the sun to the earth.

It is known that the speed of light is 300,000 kilometers per second. But even with such dizzying speed, it will take time to overcome the distance between the Sun and the Earth. And 8 minutes is not so much on a cosmic scale. It takes 5.5 hours for sunlight to reach Pluto.

10. If you remove all the interatomic space, humanity will fit in a sugar cube

In fact, more than 99.9999% of an atom is empty space. An atom consists of a tiny, dense nucleus surrounded by a cloud of electrons that proportionally occupy more space. This is because electrons move in waves. They can only exist where the crests and troughs of the waves add up in a certain way. The electrons do not stay at one point, their location can be anywhere within the orbit. That is why they take up a lot of space.

11. Gastric Juice Can Dissolve Razor Blades

The stomach digests food thanks to caustic hydrochloric acid with a high pH (hydrogen index) - from two to three. But at the same time, the acid also affects the gastric mucosa, which, however, is able to quickly recover. The lining of your stomach is completely renewed every four days.

Scientists have many versions of why this happens. The most likely: due to huge asteroids that have affected its course in the past, or due to the strong circulation of air currents in the upper atmosphere.

13. A flea can accelerate faster than a space shuttle.

Flea jumps reach breathtaking heights - 8 centimeters per millisecond. Each jump gives the flea an acceleration that is 50 times the acceleration of the spaceship.

What interesting facts do you know?

Here are a number of interesting and surprising facts about science, which include the study of our Universe, as well as touch on the topic of the elixir of immortality and some disturbing moments.

What is so interesting about science?

The world of science has inexhaustible information, but much more information is still inaccessible to human minds. However, we strive to penetrate the secrets of the universe, which leads us to various discoveries, many of which are extremely fascinating and amazing.

What interesting facts about science of various directions can be cited as an example today, so much so that each reader finds something interesting in each of them? Let's try to talk about the most amazing and relevant.

Anatoly Brushkov, head of the department of geocryology at one of the Russian universities, introduced himself into the body of an ancient bacterium, once found in Siberia in a frozen state. As he assures, it contains the gene responsible for longevity. It was found in the region of Yakutia, whose inhabitants are distinguished by a high life expectancy.

The scientist believes that bacterial cells are endowed with special mechanisms that allow them to significantly prolong their existence. Brushkov insists that the experiment, set on itself, will be successful, which will once be confirmed by the extension of his life. Although, how can we know how long he would have lived without this bacterium?

Are we alone in the universe?

Interesting facts about science in the field of astronomy often shock the world. Some time ago, during joint research conducted by German and American scientists, it was possible to detect radio signals sent from space. Researchers have no doubt that they come from outside the solar system, and the energy of the source of these signals is conventionally equated to the energy generated by the Sun during the day.

A variety of hypotheses are being built on this basis, and the main one is the opinion that it was an attempt by an extraterrestrial civilization to establish contact with us. Or the signals are the result of certain processes occurring in space, about which nothing is known to modern science.

Scientists are also confident that the source is located somewhere within our galaxy, and not outside it, and in the near future attempts will be made to determine more accurate coordinates.

Black holes or spatial gates?

Everyone has heard about the existence of black holes in the universe. These are substances that have a large mass and energy, and absorb all matter into themselves, including any cosmic bodies.

Renowned physicist Stephen Hawking insists that these holes can act as a gateway from one universe to another. However, according to the scientist, a traveler who has entered such a gate may end up anywhere in some other universe, but he will never be able to return to this one.

Previously, black holes were considered a dead end, an element of the end of the world. Now Hawking is of the opinion that this is a one-way tunnel with a one-way ticket. Such a hypothesis is, in fact, an attempt to answer the question of scientists, where bodies and objects, including sunlight, can disappear. After all, this contradicts the earthly laws of physics and the main one: energy does not come from nowhere and does not disappear into nowhere.

endangered bees

Interesting facts about science emerge in the world of fauna. Scientists suggest that within 20 years, bees may completely disappear on our planet. Already, the process of their disappearance is dynamically progressing. For example, in Russia, the number of these insects has almost halved.

The explanation for this, the researchers call the deterioration of the environmental situation. In addition, the rapid development of telecommunication systems affects the form of radio emissions, which also makes it impossible for many species of organisms to exist on Earth.

How much is the Earth worth?

An interesting thought occurred to one American astrophysicist. He considered that the mass of the planets of the solar system and their sizes are no longer of interest to anyone, but the cost in monetary terms is new and relevant. In the course of research, GregLaughlin came to the conclusion that our planet is the most expensive of them.

Interesting scientific facts

1. Pseudo-blindness is a phenomenon in which blind people develop a physiological response to visual stimuli (such as an angry face) despite being unable to see them.

2. If a thimble is filled with matter from a neutron star, it will weigh almost 100 million tons.

3. If people used Newton's formulas instead of Einstein's theory of relativity, GPS calculations would differ by several kilometers.

4. The coldest place in the known universe is on Earth in a laboratory. Scientists have succeeded in freezing atoms using laser cooling. This resulted in temperatures in the billionth power of absolute zero.

5. There are more synapses in the human brain than there are stars in the Milky Way.

6. If it were possible to remove all the empty space in atoms, then Everest could be placed in a glass.

7. The compound that gives raspberries their flavor is found throughout our galaxy. You heard it right, the Milky Way tastes like raspberries.

8. According to the Hafele-Keating experiment, time runs faster when flying in a westerly direction than in an easterly direction (relative to the center of the Earth).

New interesting facts

9. Every cell in your body has been dividing since life began on Earth. And all this division will end with your death, with the exception of the cells that you pass on to your descendants (1 per child) and certain circumstances (for example, organ donation).

10. The only reason you are able to read this article is because hundreds of miles of fiberglass cables lie on the ocean floor.

11. The grease in your knees is one of the most slippery substances known to man.

12. When you remember an event in the past, you don't remember the event itself, but rather the last time you remembered it. In other words, you have a memory of memories. For this reason, people's memories are often inaccurate.