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
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
Zoologists from Argentina, the USA and Chile have discovered that plateau hamsters Abrothrix hirta from the wet western slopes of the Andes are larger than relatives that inhabit the arid plains east of this mountain range. This pattern is explained by the fact that the abundance of precipitation has a positive effect on the growth… Continue reading Hamsters from the wet slopes of the Andes turned out to be larger than their relatives from the arid plains
Spanish scientists have compiled a list of genes that are likely responsible for the “immortality” of the jellyfish Turritopsis dohrnii. To do this, they sequenced its genome and compared it with the genome of a jellyfish. Turritopsis rubra. It turned out that the “immortal” jellyfish, unlike its relative, acquired additional copies – up to eight… Continue reading The genome of the “immortal” jellyfish has been sequenced
Scientists from the UK and Germany examined the remains from a collective burial in a well, discovered in the center of Norwich, England in 2004. Radiocarbon dating showed that these people, many of whom were children, died between 1161 and 1216 AD. Paleogenetic research and historical evidence indicate that the remains belonged to Ashkenazi Jews,… Continue reading People buried in an English well turned out to be victims of a medieval pogrom
The reintroduction of bison to areas of the prairie where they once lived but were exterminated by humans has a positive effect on the local flora, American ecologists have found. After analyzing the results of an experiment lasting about thirty years, they found that in the presence of bison, the species diversity of prairie plants… Continue reading The return of bison has made the prairie vegetation more diverse
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.
After a night of poor sleep or no sleep at all, people consider themselves less willing to help others, American scientists found in laboratory experiments and studying the sleep experience of people at home. It also found that after daylight saving time, when people potentially lose an hour of sleep, they donate less than they… Continue reading People didn't want to help others after a sleepless night and daylight saving time.
A new species of giant, long-necked dinosaur that lived about 175 million years ago during the Jurassic period was described in Colombia. Vertebra belonging to Perijasaurus lapaz, is the earliest and northernmost sauropod specimen discovered in South America. The find provides information about the initial diversification of sauropods at low latitudes. The study was published… Continue reading A new sauropod from Colombia reveals the early spread of long-necked dinosaurs to South America
Researchers in China were able to improve the behavior of mice suffering from dementia and Parkinson's disease, thanks to eupalinolide B, isolated from Lindley's bone marrow (Eupatorium lindleyanum). The substance suppressed neuroinflammation by reducing the activity of immune cells in the brain. Inflammation in the nervous system is considered a major cause of neuronal damage… Continue reading Neurodegenerative diseases have been proposed to be treated with Lindley's sap