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

Mirror light nuclei differed from heavy ones in the frequency of nucleon pair production

Physicists from 13 countries presented the results of a study of the relative frequency of production of short-range two-nucleon correlations in the lightest mirror nuclei containing three nucleons. The data were obtained for a certain kinematic range during electron scattering by nuclei. The collaboration found that in light nuclei, neutron-proton pairs are formed approximately twice… Continue reading Mirror light nuclei differed from heavy ones in the frequency of nucleon pair production

Hamsters from the wet slopes of the Andes turned out to be larger than their relatives from the arid plains

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

Engineers have learned to touch the touch screen without contact

Engineers from China and Germany have created the GhostTouch device, which allows contactless control of capacitive touch screens, taking advantage of their design features and susceptibility to electromagnetic interference. The device can accurately simulate taps and swipes in different directions on the screens of many popular smartphones without touching them. Despite the fact that the… Continue reading Engineers have learned to touch the touch screen without contact

The genome of the “immortal” jellyfish has been sequenced

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

Simple details of mice's dreams deciphered by eye movements

Neuroscientists from the United States measured the activity of neurons in the anterodorsal nucleus of the thalamus in mice, which are involved in the control of head position, and compared them with eye movements during wakefulness and then during sleep. It turned out that the electrical activity and eye movements of sleeping and active animals… Continue reading Simple details of mice's dreams deciphered by eye movements

An ancient burial of a girl in a canoe found in Patagonia

Archaeologists have discovered an ancient canoe burial in the Argentine part of Patagonia. It contained the remains of a young and short girl, 17–25 years old, who was buried more than 840 years ago along with a ceramic vessel covered with white glaze and decorated with red geometric designs. This was reported in an article… Continue reading An ancient burial of a girl in a canoe found in Patagonia

Electrical brain stimulation improves memory in older adults

American neurophysiologists have discovered that transcranial electrical stimulation of the brain helps improve short- and long-term memory. To do this, elderly participants in the experiment were stimulated with alternating current for 20 minutes for four days in a row. Memory improvements after therapy persisted in the subjects for one month. The study was published in… Continue reading Electrical brain stimulation improves memory in older adults

Gut bacteria helped bees communicate

Scientists from Germany and Switzerland have assessed the contribution of the gut microbiome to the social behavior of bees. It turned out that it makes bees interact with each other more often. Moreover, metamorphoses in insect behavior are accompanied by changes in gene expression and metabolite synthesis in the brain. The results of the study… Continue reading Gut bacteria helped bees communicate

Belief in luck and predictions linked to the Human Development Index

Belief in the supernatural is widespread throughout the world, but belief in luck and fortune telling is strongest in some countries in South Asia and Eastern Europe, including Latvia, Russia, Indonesia and Singapore. And the least susceptible to such beliefs are the inhabitants of Protestant Europe. Australian scientists came to this conclusion after analyzing data… Continue reading Belief in luck and predictions linked to the Human Development Index