Drinking water is just as pleasurable for the brain as sex and delicious food.

A team of scientists from the US found that when drinking water, part of the brain releases dopamine, as is the case with such pleasurable activities as sex and eating delicious food. The researchers were able to trace this process during experiments on mice.

Scientists from China have found that the trajectory of tail wagging in dogs depends on their emotional state.

In the process of conducting tests, it was possible to find out that the dog wags its tail to the right more often if a familiar person is in front of him, if he feels comfortable. While wagging his tail to the left makes it clear that he is uncomfortable or there is a stranger in front of him.

Chinese scientists have created a laser that can write directly in the air.

Scientists at the Hongtuo Ultrafast Laser Laboratory in Wuhan have created a laser pen that can draw patterns in the air. It uses ultrashort laser pulses to strip electrons from air particles and turn them into light-emitting plasma or ionized gas. The image obtained with the help of such a laser is visible from all sides. The creators of the laser say that it can be used in high-precision manufacturing, medicine and quantum computing.

The James Webb telescope has found the oldest galaxy that existed 13.5 billion years ago.

We are most likely seeing GLASS-z13 as it was just 300 million years after the Big Bang. This is as much as 100 million years less than the previous record holder. The galaxy has a mass of a billion suns, which is potentially very surprising given how soon after the Big Bang it formed.

The UK's largest radio telescope has been converted into a backdrop for a light show.

Lovell's giant radio telescope will take center stage at the Bluedot festival. On the surface of its dish will broadcast images from the James Webb Space Telescope, NASA Blue Marble Next Generation satellites, photographs of the near and far sides of the Moon, as well as the surface of the Sun. The soundtrack for the show will be recordings from space, including the sonification (representation of information in audio format) of a scan of the Milky Way galaxy made by a radio telescope.

Saudi Arabia has unveiled plans to build a $1 trillion mirror glass skyscraper 120 km long.

The "Mirror Line" will become part of a desert city called Neom. The Saudi prince has said he wants his country to build an iconic and timeless building project similar to the Egyptian pyramids. It is assumed that the building will not have roads and cars - only footpaths. At least in the ground part of the city. There will be another level underground - service infrastructure and transport will be placed there. It is planned to use only renewable energy.

Elephants can communicate with their feet

Special nerve endings on the legs of elephants are able to capture various types of vibrations emitted by their relatives. True, they also hear with their ears, but poorly.

Serotonin, which is responsible for happiness, can be toxic.

It causes severe pain on contact with the skin and is the main ingredient in wasp venom.

Excessive self-confidence reinforces anti-scientific views.

A team of scientists from the United States found that overconfident people are more likely to trust anti-scientific views than those who are used to self-doubt. “Overconfidence interferes with learning,” says study lead author Nicholas Light.

Facts about Mars.

The Martian day is 24 hours 39 minutes, which is very close to Earth. And we could use an extra 39 minutes! Martian sunrises and sunsets are the exact opposite of earthly ones. Because of the dust scattered in the atmosphere of the planet, they are painted in blue tones. Mars currently has no global magnetic field. However, there are magnetized areas in its crust, indicating that the planet possessed it in the distant past.

In the Netherlands, they created a prototype carbon dioxide-absorbing electric car.

As planned, the invention will be able to absorb more CO2 than it will produce during its life cycle. The creators developed the monocoque and body panels using additive technologies to reduce material waste and produce as little carbon dioxide as possible.

Miracle mattress.

Texas has developed a mattress that should make users feel sleepy thanks to properly positioned cooling and heating elements. In particular, the central areas of the body are cooled, while the arms, legs and neck are heated. Two versions of the mattress (one with water and one with air) were tested on 11 volunteers. Participants were forced to go to bed two hours earlier than usual, and on some nights the cooling and heating functions were turned on, while on others they were not. The scientists found that cooling and warming up caused the subjects to fall asleep about 58% faster.

California farmers have mastered unmanned tractors: they are cheaper, greener and more productive.

Instead of a driver, such a tractor has a remote operator who monitors and receives alerts in real time. The vehicle is equipped with a full range of cameras and sensors, so you can instantly determine exactly which crop the device is working with, as well as collect data on the state of the crop and soil. The tractor is also equipped with sensors to detect livestock, crops and workers: the machine will stop until there are no obstacles in its path.

The American brand has released sneakers made from recycled dildos.

Los Angeles-based clothing brand Rose In Good Faith has released "Plastic Soul" sneakers made from discarded dildos. The manufacturer melted them into plastic, and made shoes out of it. Available in a single cream color, it's water-resistant and comfortable to wear as it features built-in arch support with a molded cork interior. The price is $130 for a pair.

Enviable ingenuity.

When prohibition raged in the United States, they began to produce grape juice concentrate in the form of a bar. The instructions for such a product included a warning: "After dissolving the bar in a gallon of water, on no account leave the resulting liquid in a dark cabinet for twenty days to avoid turning into wine."

Frightening reality.

It is known about the existence of at least 8 nuclear charges in the world, which are officially listed as missing.

Honorary Donor.

74-year-old Australian James Harrison donated blood about 1,000 times. His rare blood type contains antibodies that help newborns with severe anemia survive. According to rough estimates, thanks to his donation, more than two million babies were saved.

About sharks.

Jaws author Peter Benchley has dedicated the last 10 years of his life to the cause of shark conservation, trying to fight the mass hysteria he unintentionally created. A human is more likely to be sexually assaulted by a dolphin than to be eaten by a shark.

Fatal familial insomnia exists.

This is a rare, inherited, incurable brain disease that gradually destroys your brain's ability to sleep. Eventually, you stop sleeping altogether, go crazy, have convulsions, and die.

Our scent.

The unique smell given off by each person's immune system is the second most important factor (after character) by which women choose potential partners.