Physicists have reproduced the chirping effect at the Kukulcan Pyramid

Colombian physicists have reproduced the unusual acoustic effect observed at the Temple of Kukulcan, located on the Yucatan Peninsula in Mexico. The echo of hand clapping at the base of the pyramid resembles the chirping or chirping of a bird. Simulations showed that this effect occurs due to the addition of many waves reflected from… Continue reading Physicists have reproduced the chirping effect at the Kukulcan Pyramid

Analysis of 777 ancient genomes clarifies the origins of paleometal populations

Paleogeneticists analyzed 777 ancient genomes from Anatolia, southeastern Europe and western Asia, spanning the last ten thousand years of human history. Focusing on the Palaeometallic Age, scientists found that there was no gene flow from Europe to Anatolia during the entire Bronze Age. In addition, they clarified the influence of representatives of the Yamnaya culture… Continue reading Analysis of 777 ancient genomes clarifies the origins of paleometal populations

New Zealand cats caught hunting endangered bats

Zoologists have described two new cases of cats hunting endangered New Zealand bats. In one of them, a feral cat caught and ate a sheathwing in the forest, and in another, a free-roaming cat injured and killed several sheathwings near her home. As noted in the magazine article New Zealand Journal of Zoologymost likely cats… Continue reading New Zealand cats caught hunting endangered bats

Wild bison have appeared in the UK

Wild bison appeared in the UK for the first time. Three females were released into the Blind Woods Game Reserve last Monday, and a male will join them in mid-August, The Guardian reports. Conservationists hope the bison will replace the steppe bison, which lived in the British Isles several thousand years ago but was hunted… Continue reading Wild bison have appeared in the UK

The first farmers who arrived on the Danube 8,200 years ago took up fishing

Scientists from Germany and Switzerland analyzed materials obtained during the study of the Lepenski Vir monument, which is located in Serbia. It turns out that around 9500–7400 BC the site was used by local hunter-gatherer-fishermen as a seasonal camp. After 6200 BC, early farmers migrated from Anatolia and Greece and mixed with the autochthonous population.… Continue reading The first farmers who arrived on the Danube 8,200 years ago took up fishing

ESA approves construction of three probes to intercept comet

The European Space Agency (ESA) has approved the creation of three spacecraft for the Comet Interceptor project. They will be launched into space in 2029 and will go to the second Lagrange point in the Sun-Earth system. There, the probes will wait for their target – a comet from the outer region of the Solar… Continue reading ESA approves construction of three probes to intercept comet

Physicists streamed the game using Rydberg atoms

American physicists used a gas of atoms as a receiving antenna for an analog video signal transmitted using radio waves. To do this, they excited atoms into high-lying Rydberg states and then irradiated them with several laser beams. Due to correctly selected installation parameters, the atoms became sensitive to the radio waves arriving at them,… Continue reading Physicists streamed the game using Rydberg atoms

The Germans set an altitude record for hydrogen aircraft

The German company H2FLY said that its passenger hydrogen aircraft HY4, for the first time for its type, rose to an altitude of more than 2200 meters, and also flew between two airports. Many developed countries are actively transitioning transport to carbon-neutral propulsion systems. Engineers have made great strides in cars, so electric cars are… Continue reading The Germans set an altitude record for hydrogen aircraft

The US Department of Defense confirms the discovery of the first interstellar meteor

Data from ground tracking stations of the US Department of Defense confirmed that the body that burned up in the Earth's atmosphere in January 2014 moved along a hyperbolic trajectory. Thus, it became the first known interstellar meteor, according to NASA's website. The first known interstellar asteroid moving along a hyperbolic trajectory and preparing to… Continue reading The US Department of Defense confirms the discovery of the first interstellar meteor

Archaeologists have found an ancient leather shoe that melted from a glacier in Norway.

Norwegian archaeologists reported the results of a study of the Hestfonni ice patch. Over the course of several years, they managed to discover ancient stone markers, iron horseshoes, one of which turned out to be about 700 years old, as well as artifacts related to reindeer hunting. Among the finds, the remains of a leather… Continue reading Archaeologists have found an ancient leather shoe that melted from a glacier in Norway.