Wooden sickles more than 7,000 years old found in Italy

Archaeologists presented the results of a study of three wooden sickles discovered during underwater excavations at the Early Neolithic site of La Marmotta in Italy. It turned out that these tools were made more than seven thousand years ago from oak and wood belonging to the rose family. Ancient people used resin from pine trees… Continue reading Wooden sickles more than 7,000 years old found in Italy

Bushfire smoke raised temperatures in Australia by three degrees

British climatologists studied the distribution of smoke in the stratosphere after bushfires in Australia in 2019–2020. They found that black carbon particles in the smoke increased the average temperature in the lower stratosphere by 0.7 degrees worldwide, with temperatures rising by three degrees over Australia. Additionally, the reaction of smoke and ozone has caused the… Continue reading Bushfire smoke raised temperatures in Australia by three degrees

The algorithm determined the mouse's pain level based on its muzzle expression

American scientists have developed a cloud platform that can assess the severity of pain in black laboratory mice. She analyzes the expression of the animal's face – the position of its nose, ears, whiskers and the degree of squinting of the eyes. Previously, researchers coped with this task manually, but, as the results show, the… Continue reading The algorithm determined the mouse's pain level based on its muzzle expression

Scientists disprove stereotype of lazy cannabis users

British researchers have refuted the stereotype that people who smoke marijuana are more apathetic and unmotivated. They tested cannabis users and non-users for apathy and anhedonia, and conducted a series of reward-related behavioral tests. The results showed that there was no significant difference between the two groups. A study conducted among adults and adolescents was… Continue reading Scientists disprove stereotype of lazy cannabis users

A burial of a woman from the Koban culture with a bronze mirror was found in the Stavropol region

Archaeologists have discovered the grave of a woman 20–25 years old in the north-west of the Stavropol Territory. The accompanying grave goods and funeral rites made it possible to attribute this find to the Western Koban culture and date it to the second half of the 8th century BC. Among the artifacts found, scientists identified… Continue reading A burial of a woman from the Koban culture with a bronze mirror was found in the Stavropol region

Archaeologists have discovered a bronze figurine of Jupiter in Taman

Archaeologists explored the ancient settlement of Red October-1, located in Taman. As a result of this work, they established that the fortified settlement arose at the turn of the 6th–5th centuries BC and existed until the modern era. Among the rare artifacts discovered at this site were a gray clay lamp in the shape of… Continue reading Archaeologists have discovered a bronze figurine of Jupiter in Taman

Ozonation of the air caused the skin to create an oxidative field around a person

Chemists from Germany, the USA and Denmark have found that substances secreted by human skin lead to the formation of an oxidative field around it. Scientists placed four people in a sealed mock-up office and began ozonizing the air to a level close to the maximum permissible concentrations. The experiment showed that ozone interacts with… Continue reading Ozonation of the air caused the skin to create an oxidative field around a person

Biochemists have discovered the mechanism behind the red coloration of birds

Biochemists from the USA and Portugal have discovered how in vertebrate cells yellow carotenoid pigments are converted into red ketocarotenoids, which are responsible for the red coloration of some vertebrates. It turned out that this transformation requires two enzymes, and the third, auxiliary, plays the role of a carrier of reacting molecules. The study was… Continue reading Biochemists have discovered the mechanism behind the red coloration of birds

Metasurfaces emit entangled photons with variable wavelengths

American and German physicists have fabricated thin metasurfaces consisting of arrays of silicon nanocavities that exhibit spontaneous parametric scattering. They showed that such structures are capable of generating entangled photons. Unlike traditional media used for this, metasurfaces have greater flexibility, which allows the wavelength of the resulting photons to be changed by changing the pump… Continue reading Metasurfaces emit entangled photons with variable wavelengths

Meteorologists predicted the first “triple” La Niña this century

The cold phase of the Southern Oscillation – La Niña – may last until the end of 2022 – early 2023, according to a press release from the World Meteorological Organization. If meteorologists' forecasts come true, for the first time this century, La Niña will be observed for three consecutive winters in the Northern Hemisphere.… Continue reading Meteorologists predicted the first “triple” La Niña this century