Ornithologists have described a new bird species from the subantarctic islands

Ornithologists have described a new species of bird that lives on the Diego Ramirez Islands south of South America. It is called the subantarctic rayadito. In the past, the local population was thought to be the spiny-tailed rayadito, which is widespread in Chile and Argentina. However, the analysis showed that individuals from the Diego Ramirez… Continue reading Ornithologists have described a new bird species from the subantarctic islands

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

Hormone injections improve cognitive performance in Down syndrome

Injections of a hormone from the hypothalamus, which is responsible for the development of the genital organs and is commonly used to treat infertility, have been able to improve cognitive performance in people with Down syndrome. This was discovered by European scientists who conducted a study on seven young men. After six months of living… Continue reading Hormone injections improve cognitive performance in Down syndrome

Astronomers have limited the lifetime of the first “intra-Venus” asteroid

Astronomers presented the results of studies of the recently discovered asteroid Ailohchahnim, whose orbit lies entirely within the orbit of Venus. It turned out that the body has a diameter of 1.7 kilometers, it can be classified as a silicate asteroid and in 1-2 million years it can collide with the inner planets or even… Continue reading Astronomers have limited the lifetime of the first “intra-Venus” asteroid

Evolution forced mammals to recreate salivary proteins fifteen times

American bioinformaticians have discovered traces in the genomes of mammals of 15 independent occurrences of new proteins responsible for the viscosity of saliva. According to the findings of the authors of a study published in Science Advancesthe culprit is a region of the genome with a high mutation rate and selection pressure during the evolutionary… Continue reading Evolution forced mammals to recreate salivary proteins fifteen times

DNA dating back 30,000 to 70,000 years was found in a Levantine cave.

Paleogeneticists read DNA from Pleistocene sediment samples recovered from Israel's Sephunima Cave. In layers ranging from 30 to 70 thousand years old, they were able to find fragments of mitochondrial DNA from representatives of the deer and hyena families. These are the oldest examples for deposits originating from a region with a climate similar to… Continue reading DNA dating back 30,000 to 70,000 years was found in a Levantine cave.

People used different parts of the brain when thinking about their inner circle and other people they knew.

People use different parts of the brain when they think about their family and closest friends and the rest of their social circle, scientists from Israel and the UK have found. In the first case, parts of the brain that are responsible for processing the mental state are activated, and in the second, those associated… Continue reading People used different parts of the brain when thinking about their inner circle and other people they knew.

Geneticists have found DNA similarities in unrelated twins

Spanish scientists have found that the strong similarity of people's faces is associated with DNA characteristics: half of the studied pairs of twins had exactly the same sequences in the genome. The researchers also collected data on the epigenome and microbiome of the mouth – but there were no noticeable similarities. The work was published… Continue reading Geneticists have found DNA similarities in unrelated twins

Medieval English monks suffered from intestinal parasites

Paleoparasitologists conducted a study of materials from two medieval necropolises in Cambridge. It turned out that the Augustinians suffered from intestinal parasites almost twice as often as ordinary townspeople. In total, scientists studied samples from 44 burials, 19 of which contained eggs of helminths – human roundworms and whipworms. This was reported in an article… Continue reading Medieval English monks suffered from intestinal parasites

Turks rescued a bear who was poisoned by hallucinogenic honey

Turkish veterinarians helped a bear who was poisoned by honey. A young female ate too much hallucinogenic rhododendron honey stolen from an apiary, as a result of which she lost her orientation and fell into euphoria. The bear was taken to a rehabilitation center, where she soon regained consciousness and was released into the wild… Continue reading Turks rescued a bear who was poisoned by hallucinogenic honey