Human beings are the most intelligent life on the earth, human beings have begun to explore the mysteries of the world since their birth, after thousands of years of scientific and technological development, now human beings have been able to go out of the earth to explore the universe, according to the research of scientists we can know that the earth is a planet in the solar system, in the solar system, there are a total of eight planets, they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, there is a Pluto outside Neptune, once Pluto also belonged to a planet, But then scientists thought Pluto was too small in size and mass, so they kicked Pluto out of the ranks of planets.
Scientists through research found that in the long history of the earth, the earth's organisms have experienced a total of 5 biological mass extinction events, each biological mass extinction event is a choice for organisms, recently, LIve Science has a surprising report, Canadian gold miners in the gold panning, found a 40,000-year-old mummified mammoth, so the workers from the frozen soil to dig out the remains of this mammoth, see here, many people may say that the archaeological value of this mammoth is very large After all, the mammoth was a prehistoric creature.
Mammoth is the largest mammal found on land by humans, it originated more than 5 million years ago, also known as the mammoth by scientists, mammoth is a creature that can survive in cold environments, they have thick hairs on their bodies, can withstand cold weather, but mammoths became extinct more than 2000 bc, after the mammoth extinction, many mammoth corpses are frozen in the frozen soil layer of northern Siberia and the Alaska Peninsula in North America. Scientists believe that the reason for the mammoth's extinction was because of the great changes in the Earth's environment. However, these mammoths are frozen in the permafrost, which is of great benefit to today's organisms.
And the appearance of the mammoth this time makes scientists feel very worried, why do you say so? Because the remains of the mammoth appear, it means that the earth's temperature is constantly rising, scientists have studied that with the continuous development of human science and technology, the global greenhouse effect has become more and more serious, and now the glaciers in the Antarctic and the Arctic have begun to melt, scientists speculate that in another 1000 years, the glaciers in the Antarctic and the Arctic will all melt, and the melting of the Arctic glaciers will accelerate the melting rate of the Antarctic glaciers, why say so? Because Arctic glaciers are mostly white, white can reflect the thermal energy of sunlight, so that the Earth's temperature is not too high.
If the arctic glaciers all melt, then the earth receives more and more sunlight temperature, which indirectly leads to the accelerated melting of the antarctic glaciers, scientists believe that if the glaciers of the Antarctic and the Arctic all melt, the sea level will rise by at least more than 70 meters, then all coastal cities will be submerged, the original land area on the earth will be less, if the coastal cities are submerged, then the land area on the earth will become smaller, and humans may launch wars for land resources. The mammoth remains that appeared this time are of great help to scientists studying prehistoric creatures because they are frozen in the permafrost.
In the low temperature environment, their hair, skin, muscles can be well preserved, but also can extract millions of years ago parasites and microorganisms, so that scientists can restore the earth environment and the earth's living organisms at that time, if scientists can extract a complete series of ecological DNA, then we can recreate a complete prehistoric ecological environment, this is not money can measure things, but anything is good and bad, Although humans were able to analyze the Earth's environment millions of years ago from the remains of mammoths, they also posed a great threat to modern organisms, such as the resurrection of prehistoric viruses.
Scientists through research found that in the permafrost, frozen a lot of ancient viruses, these viruses are not completely lost, but hibernated up, if the frozen soil layer all melted, then these viruses will slowly recover, which is now the earth's organisms, absolutely not a good news, the volume of ancient viruses is much larger than the volume of the current virus, which means that their toxicity is also very strong, in the process of biological evolution, the biological immune system has long been immune to this prehistoric virus ability, If after the recovery of prehistoric viruses, the current organisms are absolutely a very great disaster for modern organisms.
At present, scientists have found ancient viruses, in 2014, French scientist Clavery once published an article, the content of the description is a giant virus, this virus survived 30,000 years ago, about 10 times larger than the current ordinary virus, and there is a very strong contagiousness, in 2015, the United States and Chinese scientists extracted 28 ancient viruses in the glacier, scientists found that these 28 ancient viruses are not harmful to humans, However, this does not mean that other ancient viruses are not harmful to humans, so humans should still be vigilant.
At present, the global temperature continues to rise, the greenhouse effect is becoming more and more serious, if the long-term development, then the sixth biological mass extinction may come, so Xiaobian believes that human beings want to survive on the earth for a long time, they must protect the earth's environment, for the earth, human beings are dispensable, if human beings disappear, the earth will evolve in tens of thousands of years, may evolve new intelligent life, but the earth is the only home for people, if the earth environment is destroyed, Then there is no way for human beings to survive.
Although scientists have now found planets similar to the earth outside the solar system, but these planets are too far from the earth, at present at the speed of human flight, it is basically impossible to fly to these planets, so we must find other ways, the only way for human beings at present is to protect the earth's environment, so that human civilization can develop for a long time, in the future, with the progress of human science and technology, human beings will be able to study sub-light speed spaceships, and when we leave the solar system, it will not be a problem. At that time, we may be able to achieve interstellar migration, Xiaobian hopes that this day can come as soon as possible, do you have anything to say about this?