Engineers have invented the world's first wooden transistor.

To create a new transistor, cork wood was used, since its wood without fibers has a uniform structure. The researchers also made a few additional changes to it. The result was a wooden transistor capable of regulating electrical current and providing continuous operation at a selected output level.

Engineers taught robot jellyfish to move objects under water.

They have developed a robot jellyfish that can reach speeds of up to 6.1 centimeters per second underwater and is able to move light objects. In the future, such devices will be able to clean water from pollution.

Unusual wall in Seattle.

The Gum Wall in Seattle is a 15 meter section covered with about 10 centimeters of gum. In 2015, the local attraction had to be removed - sugar began to destroy the wall.

In the USA, beer was created from San Francisco sewage.

The product is the result of a collaboration between Northern California brewers Devil's Canyon and water treatment company Epic Cleantec. The result of the joint work was Kölsch with a bitter taste and a pronounced aroma of hops. To create it, they used wastewater from washing, washing dishes, showers, bathtubs and sinks of one of the residential complexes.

The Americans created the MouthPad, a computer mouse controlled by the tongue.

Specialists from the American company Augmental introduced a new computer mouse for people with disabilities. It is a controller in the form of a cap, which is inserted into the mouth and interacts with the tongue. It has a built-in battery, as well as a touch panel in the sky - this is the main control. The user is required to put the tongue in the correct position, and the sensors will respond to the level of pressure. Users are promised accessible functionality with the ability to communicate and even play. The release date has not yet been announced. While the device is in development, those who wish can register on the waiting list.

Venus Aerospace showed the concept of a supersonic civil aircraft Stargazer.

It will accelerate to Mach 9 and will be able to deliver passengers from New York to Tokyo in an hour with a maximum speed of 11 thousand kilometers per hour. For this, a combo of conventional aircraft and rocket engines will be used - the jet will fly almost in space. There is only one nuance - we are talking about a business jet for 12 people.

One piano chord can take away nightmares.

Scientists have found that nightmares can be cured with a combination of two non-invasive treatments. This was confirmed in a study of 36 patients with sleep disorders. One method is to rewrite your most frequent nightmares in a positive way. Scientists have proposed to reinforce this therapy with sound associated with positive experiences. Participants in the experiment completed a dream diary for two weeks. During this time, half of the group went through a therapy session to create a connection between the positive version of their nightmares and the C69 piano chord. The subjects then slept with headphones on, where the sound was played every 10 seconds during REM sleep, when nightmares are most likely. Their number decreased several times compared to the control group.

For the first time, a New Zealand court has made revenge porn a crime.

A New Zealander got revenge on his girlfriend for breaking up by posting their home video on a porn site. After that, she was diagnosed with depression and post-traumatic stress disorder. The girl turned to a special agency for help, but her request was rejected on the grounds that sexual violence based on images is not recognized in the law. The victim sued for many years and demanded that the video be removed from the network, and also sought compensation for moral damage. In the end, she was able to win the trial.

Aliens can learn about earthlings because of cell towers.

The scientists explained that each base station emits a signal with a power of 100-200 watts, and the total energy they radiate into space is second only to military radars. Astronomers have shown that, using large radio telescopes, mobile phone network signals can be picked up from nearby stars, including Alpha Centauri and Barnard's Star. As broadband systems increase in power, the activity of earthlings becomes even more visible. Signals generated artificially will come mainly from densely populated parts of the northern hemisphere.

At the bottom of the ocean, they found pollutants that were banned half a century ago.

Researchers from Sweden and Denmark have found traces of polychlorinated biphenyls at the bottom of a trench in the Pacific Ocean. These substances have been banned since the 1970s because of the damage they cause when they bind to the tissues of living organisms. They have been used in electrical equipment, paints, coolants and many other products.

Japan will ban upskirting and photo voyeurism.

The new law prohibits taking, distributing and storing photos of other people's genitals without consent. It also criminalizes the filming of people in sexual positions. Offenders face up to three years in prison or a fine of up to 3 million Japanese yen (about 1.7 million rubles). It is expected that innovations will be adopted in June this year.

A women-only high-rise building is being built in London.

It will be a 15-story building with 102 apartments for those who have experienced domestic violence, discrimination and financial problems. The rooms will be designed so that they are comfortable for women of any age and needs. For example, the kitchen will have lower worktops and powerful ventilation specifically for menopausal women. It will be possible to rent housing at a low social rate. Men will be able to live in the house only if they become partners with the tenants.

Mercedes has introduced a subscription to electric vehicles.

EQE and EQS models have their speed trimmed. Now, to unlock fast acceleration and motor power, you need to pay from $60 to $90 per month - depending on the model.

Chairs from IKEA can turn off your monitor.

The problem showed up in the popular Markus office chair. It's all about the seat fabric and/or gas suspension - one of these elements causes an electrostatic discharge, which triggers the monitor's fuses. So, if you had a similar problem, you now know the reason.

Social credit grocery stores launched in China.

In them, citizens with a high rating can receive products from the government for free - the money for this is taken from the taxes of citizens with a low social rating.

Scientists have discovered for the first time what is in the core of Mars.

They found that the core of Mars is a liquid alloy of iron with a large amount of sulfur and oxygen. This was found out from data on seismic activity on the planet, which were collected over four years.

A British engineer has developed a garbage can that can go up to 100 km/h.

He wanted to break the world record, and he himself did not expect that he would succeed. The tank is equipped with a car engine and a bicycle wheel, with the driver placed inside. After several successful attempts and one accident, the tank nevertheless returned to its usual function - garbage collection.

Monkeys are able to think carefully about decisions and choose the most optimal of them.

Monkeys are able to think long and carefully to think through complex decisions, considering various combinations of factors, including the cost of resources, the consequences and limitations of certain strategies. Neuroscientists at the University of Pittsburgh School of Medicine came to these conclusions after experimenting with primates.

Space tourists will be banned from having sex during the flight.

Scientists warn about the dangerous effects of radiation on the embryo if a child is conceived. While astronauts are taught to restrain any sexual urges during extended periods in space, less prepared tourists may not be as reticent. Because conceiving a human in space poses a risk to both the unborn child and the burgeoning space tourism sector, tourists will be required to sign a waiver of in-flight sex.

One and a half thousand things Freddie Mercury will sell at auction in London.

In London, Mary Austin, a friend of Freddie Mercury, will auction 1,500 personal belongings of the musician at Sotheby's. One of the most interesting lots is a crown made in the image of the headdress of British monarchs and a red velvet mantle with faux fur and rhinestones. In this costume, Mercury performed the song God Save the Queen at his last live performance at Knebworth in 1986. Other valuable items include a manuscript with lyrics to We are the Champions, a small Tiffany silver mustache comb, and a 1975 Mercury Martin D-35 acoustic guitar in its original case. In addition, paintings and artifacts that Freddie Mercury bought during his travels will be put up for auction.