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
Archaeologists have discovered in Norway the shaft of a medieval arrow, the broken shank of which was repaired by a hunter using sinew. However, apparently, then he was unsuccessful again and his shot missed the target, burying the arrow for several centuries under snow and ice. As the Secrets of the Ice project team reports… Continue reading In Norway, a repaired arrow from an unlucky hunter was found that had melted from under the ice.
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
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
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
At the time of the construction of the Giza pyramids, the water level in the Nile allowed the filling of an artificial reservoir near the construction site so that the Egyptians could transport materials from the quarries directly to the construction site. This was confirmed by scientists from Egypt, China and France, who examined sediment… Continue reading The water level in the Nile allowed the Egyptians to transport stone to the site of the pyramids.
Paleogeneticists have read 30 genomes of ancient inhabitants of Tunisia, central Italy and Sardinia dating back to the Iron Age. In all regions, they found both descendants of more ancient local populations and immigrants from other territories. Thus, in the necropolis near the Carthaginian city of Kerkuan there were the remains of the descendants of… Continue reading The population of the ancient Carthaginian city turned out to be genetically diverse
Spanish archaeologists discovered a bas-relief depiction of a phallus during excavations at El Higuerón in southern Spain. It was carved on the cornerstone of a large ancient Roman building that scientists are exploring in Nueva Carteya in the province of Cordoba, El Pais reports. Phallic symbols and images were widespread in ancient Rome. They were… Continue reading In Spain, a half-meter-long ancient Roman phallus was found carved on a building.
Chinese scientists have tested a new method of genome engineering: they have learned to stitch mouse chromosomes together. It turned out that if the chromosomes are not very large, then it is easy to glue them together and get a mouse with an odd number of chromosomes. Such animals can grow up healthy and fertile… Continue reading Chinese scientists have deprived mice of a chromosome. And then another one
Astronomers have discovered two jets of relativistic plasma near the active galaxy NGC 2663, close to the Milky Way, which are characterized by amazing smoothness and enormous length, reaching more than a million light years. For one of them, scientists observed for the first time jet recollimation on a kiloparsec scale, which manifests itself in… Continue reading Astronomers have found very long radio jets near a nearby active galaxy