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

Daily inhalation of laughing gas left the patient unable to walk

American doctors described in The New England Journal of Medicine rare medical case. A patient was admitted to the hospital with symptoms of severe vitamin B deficiency.12 – impaired sensitivity and coordination of movements, up to the inability to walk. It turned out that over the past two months he had been inhaling nitrous oxide… Continue reading Daily inhalation of laughing gas left the patient unable to walk

“James Webb” for the first time reliably found carbon dioxide in the atmosphere of an exoplanet

The James Webb Infrared Space Observatory has for the first time reliably detected carbon dioxide in the atmosphere of an exoplanet. The target of the observations was the hot Saturn WASP-39b, and their results will help test models for the formation of the exoplanet. A preprint of the work was published on arXiv.org. Carbon dioxide… Continue reading “James Webb” for the first time reliably found carbon dioxide in the atmosphere of an exoplanet

Ornithischian dinosaurs began living in packs already in the Jurassic period

Paleontologists analyzed samples of primitive ornithischians Lesothosaurus diagnosticus, found together in South Africa, and concluded that ornithischian dinosaurs lived in packs as early as the Lower Jurassic. This is the second earliest example of the social lifestyle of ornithischians. The study was published in the journal Palaeontology. Lesothosauruses were small omnivorous dinosaurs that lived in… Continue reading Ornithischian dinosaurs began living in packs already in the Jurassic period

Physicists made photons interfere with magnons

Chinese physicists have demonstrated quantum interference between waves of different natures, namely between photons and magnons. They repeated the Hong-Wu-Mandel experiment, where dark polaritons excited in an atomic cloud acted as a beam splitter. By controlling the properties of polaritons using an additional laser, scientists could change the nature of the interference from bosonic to… Continue reading Physicists made photons interfere with magnons

A candidate for an artificial radio signal from an Earth-like exoplanet turned out to be of terrestrial nature

Astronomers have concluded that the unusual narrow-band radio signal recorded in the direction of the Kepler-438 exoplanet system last year by the FAST telescope is not a technosignature, but is of anthropogenic origin. This is indicated by the polarization properties of the signal. A preprint of the work was published on arXiv.org. To answer the… Continue reading A candidate for an artificial radio signal from an Earth-like exoplanet turned out to be of terrestrial nature

One atom emits fourteen entangled photons

German physicists have reported the successful generation of entangled multiqubit states on photons using a single atom placed in a cavity. They managed to involve 12 photons in the creation of cluster states, and 14 photons of Greenberger-Horn-Zeilinger states. The frequency of generation and detection of entangled photonic chains based on the proposed scheme turned… Continue reading One atom emits fourteen entangled photons

Astronomers have found very long radio jets near a nearby active galaxy

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

Sahelanthropus was again allowed to walk on two legs

Paleontologists examined femur and ulna bones found more than 20 years ago in Chad. They concluded that the remains belonged to Sahelanthropus (Sahelanthropus tchadensis), who lived about seven million years ago. According to the researchers, the individual could move on the ground on two legs, but also climbed trees. This was reported in an article… Continue reading Sahelanthropus was again allowed to walk on two legs

Remains of a medieval dwarf found in Poland

The remains of a medieval dwarf man, whose height was only 115 centimeters, were discovered in Poland. Paleopathologists believe that the cause of this anomaly was achondroplasia. Among other pathologies, scientists noted Lery-Weil dyschondrosteosis, as well as ulnar hemimelia. This was reported in an article published in International Journal of Osteoarchaeology. The concept of dwarfism… Continue reading Remains of a medieval dwarf found in Poland