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Terrifying: Ancient virus revived due to melting permafrost
Tác giả: HyHy
The permafrost is like a natural refrigerator that keeps everything buried for hundreds of thousands of years, and this refrigerator goes into defrost mode.
What is permafrost?
In geology, a permafrost or permafrost is a layer of soil that is at or below the freezing point of water 0°C (32°F) for two years or more. Most high-latitude permafrost (i.e. land near the North and South Poles) can occur on mountains at much lower latitudes.
Permafrost is a thick layer of frozen soil that covers about a quarter of the Arctic, storing twice as much carbon as the air in the atmosphere.
What happens when the permafrost melts?
As the permafrost melts, organic matter is released and significant amounts of carbon and methane are released into the air. 43-135 billion tons of carbon - the greenhouse gas - will be released by 2100 and 246-415 billion tons of carbon will be released by 2200.
Secrets hidden in the land of permafrost
Not only releasing carbon and methane, the permafrost is melting and revealing hidden secrets. The process could revive deadly pathogens that have been absent for thousands of years, experts say, including unidentified bacteria and viruses found in the tissues of mummified fossils and other animals. Air bubbles in the ice.
In total, the researchers discovered 33 groups of viruses, of which 28 were completely new to scientists.
In recent years, in the Arctic region of Russia, experts have noted that diseases such as tick-borne encephalitis, brucellosis, malaria, leptospirosis, rabies and anthrax are on the rise in livestock. birds and wild animals. Many viral and bacterial infections can be spread to humans from infected animals.
DNA of the smallpox virus was discovered in the remains of people who died 300 years ago in Yakutia, as well as in the pustules on the mummy of Pharaoh Ramses V in Egypt dating from about 3,200 years ago.
In 2005, biopsies recreated the virus that caused the Spanish flu pandemic on the basis of the remains of a man buried in Alaska in 1918.
In 2014, Professor Jean-Michel Claverie from Aix-Marseille University (France) said they had successfully revived and analyzed the "ancient Siberian virus", a terrifying little "monster" once played by his team. brought back from the frozen area a few years ago.
These viruses are not only easily revived in a suitable laboratory environment, after 30,000 years of being sealed in ice, but have also been shown to cause disaster in other human worlds. It caused serious health problems for mammoths and humans, not our ancestors but Neanderthals – another extinct human species.
According to Professor Claverie, a number of slightly more modern diseases are also being sealed in the ice blocks at risk of upcoming melting: anthrax, early season disease and some types of flu. The proof is a terrifying event recorded in 2016: a 12-year-old boy died after being infected with anthrax from a remote area from the Yamal peninsula of Siberia: no "F0", but from the germs themselves. thawed disease.
Although these ancient giant viruses only infect microorganisms, their ability to regenerate after millennia is alarming. Scientists do not exclude that in the permafrost there are infectious pathogens that are dangerous to humans.