It is interesting. Large selection of questions and answers: p. 107

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To help the erudite. Database on the history, geography, biology, science, technology, sport, culture, traditions of the peoples of the world. According to the materials of the press and the Internet.

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Every dollar NASA spends on space development generates $6 in other industries using space technology.

In the genome of each of us, 1,5 - 2% of Neanderthal DNA. But since these pieces are different for different people, all of humanity as a whole stores 35-70% of Neanderthal genes.

China (1,32 million) and the United States (1,25 million) lead the world in terms of the number of researchers. But in terms of the number of researchers per thousand workers, Finland (14,8), Israel (14,22) and Denmark (12,86) are ahead. Let us note that there are about 350 scientists in Russia now.

English astronomers estimate the volume of the Big Bang at about 100-120 decibels.

Physicists from the University of Tokyo have obtained a magnetic field of record strength - 1200 Tesla. This is 50 million times the Earth's magnetic field.

95% of brain activity is not associated with consciousness. Up to 40% of behavior is performed automatically, out of habit. It takes 15 to 254 days to form a new habit.

The sun is an almost perfect ball. Unlike the Earth, which is slightly flattened due to centrifugal force, the polar and equatorial radii of the star differ, according to the latest data, by only 0,00075%.

Indian statistics show that education increases the risk of suicide. Among men who completed at least high school, the risk of suicide is 43% higher than among uneducated, women even 90% higher.

If the development of computer technology continues at the same pace, then by 2040 our computers will require more electricity than the world can produce.

The giant panda moves at a speed of 15,5 meters per hour and uses 62% less energy than other mammals of the same weight and size. The fact is that her diet, bamboo sprouts, is very low in calories.

There are 86 billion neurons in the human brain and 256 billion in the brain of an African elephant.

From 2004 to 2015, due to global warming, Greenland was annually freed from 272 billion tons of ice and emerged from the mantle by 12 mm.

Japanese researchers simulated one second of human brain activity on a supercomputer. The machine, the fourth in the world in terms of power, took 40 minutes to calculate.

Despite the efforts of British paleontologists, they failed to find DNA in insects preserved in amber several million years old. Thus, the basis of the plot of the movie Jurassic Park collapses.

A survey of 3000 preschoolers conducted in 20 US cities showed that children who drink more than three glasses of sugary carbonated drinks a day show increased aggressiveness, fights and break other people's toys more often than those who drink tea or plain water.

Every year, botanists discover about 2000 new plant species.

In New Zealand, it was possible to completely destroy the cabbage butterfly accidentally introduced a few years ago, and there are plans to get rid of other aliens by 2050 - stoats, possums and rats.

American biologists have found at least eight peptides (proteins with a short molecule) with antimicrobial activity in the blood of giant monitor lizards from Komodo Island.

The pay gap between men and women around the world is gradually narrowing. But, according to the World Economic Forum, this is happening at such a pace that full financial equality will be achieved only after 170 years.

More than 20% of all land plant species in the world are threatened with extinction, according to the Royal Botanic Gardens in London.

About a thousand mobile applications for smartphones are developed every day in the world. But three-quarters of phone owners who download such a program will use it only on the first day after purchase and will no longer use it. And in a week, 89% will forget about it.

According to forecasts, in the next 5 years in the 15 leading countries of the world, due to the introduction of robots and artificial intelligence, the number of unemployed will reach approximately 5 million. Two-thirds of layoffs will be in office and administrative positions.

From 1991 to 2012, cancer deaths in the US fell by 23%.

The energy of tidal currents in the seas and oceans of the world is about 3,5 terawatts. But it would be possible to really use only the ebb and flow in narrow bays, and in them one can count on only 100 gigawatts, and, moreover, with significant losses for the environment.

Wolves were destroyed by hunting in France in the 30s of the last century. Now a program has been adopted to restore the population, there are already 360 of them in the country, and by 2023 there should be 500 wolves.

The Rosetta spacecraft collected data on the composition of the dusty tail of the Churyumov-Gerasimenko comet: its substance contains 30% carbon, oxygen and hydrogen, 5,5% silicon, 1,6% iron, 0,6% magnesium and 2,3% other chemical elements.

Experiments conducted in the USA have shown that students remember the content of the lecture better if they wrote notes by hand, and not on a laptop keyboard.

The Paris Museum of Natural History has posted online scans of six million plants from its herbarium, which includes a total of eight million specimens. Scanning took two and a half years and cost 12 million euros.

A survey conducted among researchers at the German pharmaceutical firm Bayer showed that 3/4 of the 67 studies they published could not be replicated with the same results.

The Korean electronics company LG has released a TV screen with a thickness of 970 microns. It is so light that it can be attached to the wall with a small magnet.

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Random news from the Archive

The sleep of babies 14.12.2022

Consultant neurologist Topun Austin of the University of Cambridge has found out why babies sleep a lot in a new study.

The researchers took a new approach for experiments - they created a special hat, where they built in light sources and sensors. This helped to measure the blood circulation in the children's brains on the principle of a pulse oximeter attached to a finger.

This method had been used before, but it required a cap with electrodes attached to it. As part of the new study, the experts used 12 tiles placed in a hat and connected to a computer with a single cable.

In the end, they got a brain image 10 times better than the fiber-optic cable system they had used before. It turned out that infants are characterized by a cyclical passage of two phases of sleep: active, when the children are mobile, and calm, when the child remains motionless.

Scientists recorded the work of the brain of newborns, and also monitored their behavior using video surveillance. Then they studied brain activity and compared it with the behavior of newborns.

It turned out that during the active phase of sleep, brain regions in the left and right hemispheres worked simultaneously and in the same way. There is a version that at this time the formation of long connections takes place in the brain. At the same time, when the resting phase of sleep sets in, shorter bonds are formed. During active sleep, the child creates a picture, and in a calm sleep, he clarifies some details.

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