In a recent study, ohio State University scientists said they found evidence of the presence of ancient viruses in ice samples from glaciers on the roofs of the world, 28 of which are new. Since ice samples are drilled, handled, and transported without special procedures to avoid contamination, the researchers used a series of methods to ensure that the results of the study were not affected.
First, the researchers scraped 0.5cm thick outer ice from around the cylindrical ice sample in a room at -5 degrees Celsius, and washed it twice with alcohol and water, then tested the decontamination effect with the same aseptic sample, and found it effective.
The researchers then used microbiological techniques to record genetic information left over from ice samples, where they found genetic information about 33 different viruses, 28 of which were brand new.
At the same time, a large number of different bacteria accompanied by the emergence of the virus, which means that the virus infected several large microbiomes.
Global warming is causing glaciers around the world to shrink, potentially releasing microbes and viruses that have been frozen for tens or even hundreds of thousands of years, the study suggests.
In 2015, French scientists resurrected a 30,000-year-old giant virus in the Siberian tundra, and found that the resurrected virus could still infect single-celled amoeba.