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
Astronomers have found for the first time an example of the result of the merger of two galaxies, where the merger process itself inhibited the formation of new stars, throwing out most of the cold gas reserves from the galaxies. In the case of SDSS J1448+1010, about 47 percent of the material needed to form… Continue reading A galaxy merger could extinguish a burst of star formation.
Chemists from the USA have found a cobalt-based cocatalyst, which, together with a tungsten-based catalyst, makes it possible to effectively produce ammonia from nitrogen under electrolysis conditions. Thanks to this combination of catalysts, the process was able to be carried out at a relatively high potential of −1.35 volts and with a current efficiency of… Continue reading An organometallic cocatalyst helped produce ammonia by electrolysis
Archaeologists have discovered the burial of a woman in Middle Franconia who died at approximately 40–50 years of age around 600 AD. Among her accompanying equipment was a folding iron chair. This is only the second such discovery from the early Middle Ages made in Germany. This was reported in a press release from the… Continue reading Burial of a woman with a 1,400-year-old folding chair unearthed in Germany
The initial height of the tsunami caused by the eruption of the Hunga Tonga Hunga Ha'apai volcano on January 15, 2022 was 90 meters. These conclusions were reached by researchers from the UK, New Zealand, Croatia and Japan, who analyzed changes in atmospheric pressure and sea level and created nine models of a volcanic tsunami.… Continue reading The January eruption of the Tonga volcano triggered a 90 meter high tsunami.
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
Archaeologists have discovered fragments of frescoes during excavations of the 2,000-year-old Temple of Cupra in the Italian commune of Cupra Marittima, CNN reports. They are made in the third Pompeian style. Surviving interior frescoes of this kind are rare. Cupra Marittima, due to its location on the Adriatic coast, was an important port city and… Continue reading Archaeologists have found well-preserved fragments of Roman frescoes from a 2,000-year-old temple
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
Archaeologists reported the results of excavations in Staraya Russa. This season they managed to discover the oldest city necropolis, dating back to the 11th – early 12th centuries, as well as two birch bark letters. In the text of the 54th letter, the author is a certain Donkey. Perhaps this is a version of a… Continue reading Archaeologists found a birch bark letter in Staraya Russa with a request to buy deer mittens