Heterogeneous catalyst reduces the cost of synthesis of cyclic polymers

Chemists from the USA, South Korea, Hungary and Switzerland have developed a heterogeneous ruthenium-based catalyst for the synthesis of cyclic polymers from cyclopentene. They also managed to come up with a reaction installation that makes it easy to separate the catalyst from the reaction products. The study was published in Nature Chemistry. Linear polymers containing… Continue reading Heterogeneous catalyst reduces the cost of synthesis of cyclic polymers

Spectrometer based on LEGO constructor will make studying physics cheaper

German physics teachers made a universal spectrometer in the Czerny-Turner scheme using LEGO constructors and scrap materials. The authors showed that it can be used to study the spectra of atomic emission, transmission, reflection and fluorescence. Reconfiguring the device for different tasks takes a few minutes, and the total cost of the device does not… Continue reading Spectrometer based on LEGO constructor will make studying physics cheaper

The smell of a woman prevented an antidepressant from calming mice

Scientists from the USA and Cyprus have found that the gender of the experimenter can influence the results of medical experiments on mice. It turned out that the smell of men causes stress in animals and a desire to escape from its source. But if a man injects a mouse with an antidepressant, its effect… Continue reading The smell of a woman prevented an antidepressant from calming mice

The most expensive drug in the world is a new therapy for beta thalassemia. One injection costs $2.8 million

The United States has approved gene therapy for beta thalassemia, an inherited blood disease. The developer of the drug, Bluebird bio, claims that one injection is enough to, if not cure, then significantly improve the patient’s condition. But such an injection would cost $2.8 million. This is 700 thousand dollars more expensive than the Zolgensma… Continue reading The most expensive drug in the world is a new therapy for beta thalassemia. One injection costs $2.8 million

The smartphone was turned into a directional smart home control panel

The American startup Fluid has developed a smart home control system that allows you not to select a specific device in the application or access it by voice. Instead, the user can simply point the smartphone in the desired direction and the control interface for this particular device will immediately appear on its screen. A… Continue reading The smartphone was turned into a directional smart home control panel

Americans have developed a clamshell monitor with two screens

The American company Mobile Pixels Inc presented a clamshell monitor: it consists of two separate screens, the angle between which can be adjusted. The monitor project was published on the Kickstarter crowdfunding platform; it has already raised almost $1.7 million. In most cases, people who are not satisfied with one monitor use a combination of… Continue reading Americans have developed a clamshell monitor with two screens

Switching to cooked food helped people spend five times less energy chewing

Physiologists and anthropologists have analyzed how metabolic rate changes while chewing gum. It turned out that it increases metabolism by 10-15 percent. Extrapolating their results to the average duration of chewing per day in different great apes, the authors found that the proportion of energy expenditure for chewing in humans became approximately five times less… Continue reading Switching to cooked food helped people spend five times less energy chewing

The seal of Vladimir Monomakh was found near Kaliningrad

Archaeologists reported new finds made during excavations of the medieval Prussian settlement of Privolnoye-1, which is located in the Kaliningrad region. Among them were weapons and household items, jewelry and costume details. But what stands out most is the seal of Vladimir Monomakh, testifying to contacts between Ancient Russia and the Prussians, which went beyond… Continue reading The seal of Vladimir Monomakh was found near Kaliningrad

The burial of an ancient Russian representative of the military elite was excavated near Suzdal

Archaeologists reported the results of excavations of two ancient Russian burial grounds discovered in Suzdal Opolye. In one of them, scientists found the remains of a man who belonged to the military elite, who was buried along with a battle ax in the 11th century. Another burial contained the remains of a woman, whose accompanying… Continue reading The burial of an ancient Russian representative of the military elite was excavated near Suzdal

More than half of species with unclear conservation status are at risk of extinction

Scientists have created a computer model that estimates the extinction risk of species for which there is insufficient data to assess their conservation status. It turned out that more than half of them should be classified as threatened. And among amphibians with unclear conservation status, about 85 percent of species are likely threatened with extinction.… Continue reading More than half of species with unclear conservation status are at risk of extinction