In addition to major floods, nuclear weapons, environmental pollution, climate deterioration ......In addition, according to the American magazine "Discover" (Discover), scientists have also assessed dozens of natural and man-made disasters, all of which are enough to create the first class of endangered state.
At present, every once in a while, there is news of species extinction on the earth, and people are beginning to realize that this is not a good natural cycle. Scientists estimate that the extinction rate of living species is 1,000 times higher than that of fossil times, and it is estimated that 99% of the species on Earth are actually endangered. Most of these species of destruction are due to the current civilization activities of human beings, which have gradually brought all kinds of life on the earth, including human beings themselves, to dangerous situations, and some of them may be encountered in the cyclical movement of nature. You may think that the above warning is just the imagination of a writer, but under the detection and observation of scientists, it is found that in the hundreds of millions of years of history, the earth has left traces of destruction many times:
The buildings found in many oceans, as well as the fossils of marine life on land, are enough to prove that the changes in the earth's crust when the land sinks into the ocean and the bottom of the sea rises to the land are normal phenomena in the earth's activities. For example, Lago Titicaca in Bolivia, South America, is located on a plateau, but the area around the lake is home to millions of fossilized marine shells, and there are still marine creatures in the lake, where fishermen can catch seahorses, green hook shrimp and shellfish. This suggests that a long time ago, the plateau here was still on the ocean floor, and due to changes in the earth's crust, it was forced to push up, which is estimated to have occurred about 100 million years ago. The legendary continent of Atlantis sank into the sea and became a vanished civilization due to changes in the earth's crust.
Charles H. HapgoodProfessor Hapgood, when studying ancient Antarctic maps, once proposed the earth-crust displacement hypothesis: under certain conditions, the entire earth's crust may rotate and displace as a whole, just like the thick skin of an empty orange, which will rotate and shift when loosened. The hypothesis is that a 30-mile-thick crust can slide across an 8,000-mile-thick core. Several scholars in the United States have linked this doctrine to the catastrophes of Siberia and Alaska 11,000 years ago: they speculated that the current Antarctic continent was originally about 2,000 miles north of Antarctica. Before the emergence of human civilization, at least 6,000 years ago, there was a crustal shift, and the entire crust rotated and shifted, pushing the Antarctic continent to its current position. As a result, Antarctica suddenly turned from warm to cold, and was gradually buried by ice and snow. At the same time, Alaska and Siberia turned to the North Pole, freezing the already warm land in an instant. This plausibly explains the hairy giant elephant and many animals that cannot live in the cold zone, such as rhinos, bison, horses, antelopes, coyotes, saber-toothed tigers, lions, ...... found in the tundra of northern SiberiaAnd human remains.
Gamma-ray bursts are the most powerful of the universe known, and scientists have very limited knowledge about them. (*Provided by: NASA).
Scientists have discovered that gamma ray bursts (GRBs) from distant alien galaxies, like the energy released by the recombination of two stars after collapse, are about 1,000 times more powerful than the sun. Before such a cataclysm occurs, humanity cannot detect the subsequent evolution and therefore cannot prevent it. Once it happens, then even a thousand light-years away, a place far away that you can't see even on a clear night, will suddenly brighten up like the sun, and then release a huge amount of energy to illuminate the earth in the form of radiation. Even though the atmosphere protects us from X-rays and gamma rays, these high-energy radiation rays can heat up the atmosphere, produce nitrogen oxides, and severely damage the ozone layer. More seriously, it directly kills photosynthetic plankton in the ocean (which provides oxygen to the atmosphere), destroys the ecology and destroys the food chain. Although scientists have very limited knowledge of the gamma radiation rays that have been discovered so far away from us, it is conceivable that the terrible consequences would be if it suddenly irradiated our planet.
In 198, a 200-foot (61-meter) meteorite crossed the atmosphere and hit the Tungguno region of Siberia, causing a major event in the area. According to astronomers, a similar event occurs once every 1300 years. If such an event occurs in the ocean or in a sparsely populated area, there is a better chance that humans may be lucky enough to avoid the disaster, but scientists say that it doesn't matter where they hit the big planets. A half-mile (about 800 meters) wide meteorite hitting the Earth (about once every 250,000 years) is not enough to destroy all mankind, but it is enough to destroy the construction of human civilization today. A five-mile-wide asteroid hitting the Earth would cause a tsunami, a volcanic eruption, and an even greater extinction, similar to the speculative end of the age of the dinosaurs. In 1994, scientists observed the entire process of the collision between Comet Shoemaker-Levy 9 and Jupiter, showing that it is by no means impossible for a planet to hit the Earth, nor is it a terrifying event that will occur millions of years later.
The Milky Way is full of black holes. According to scientists, there are about a million black holes in the Milky Way, and these objects are moving like other stars. If an ordinary planet were close to us, we would find that if it were a black hole, we would not be alerted. If it is a planet that is about to hit the earth, scientists can observe it decades ago, and they can measure the specific time and energy; However, black holes will not hit the earth and destroy the earth, but it can disrupt the orbits of the planets in the solar system and cause very large changes in the earth's weather.
A huge flare in the lower left corner of the Sun (**Courtesy: NOAA Photo Library).
In recent years, the Sun has entered a periodic change in the magnetic field every 10 to 11 years, during which time particles and radiation may blow towards the Earth at a speed of 1 million kilometers per hour, and the threat to the Earth is difficult for scientists to estimate. 2 On April 4 of one year, as scientists estimated, there was a huge sunspot ** on the surface of the sun, one of the largest eruptions on record, and fortunately the solar flare did not face the Earth, so most of the energy released by the flare did not hit the Earth. A flare is caused by a sudden burst of magnetic energy, which can speed up the movement of solar particles to near the speed of light in a matter of seconds, and also raise the temperature of the sun's surface to hundreds of millions of degrees. The energy released by flares can even reach the energy produced by 100 billion tons of explosives**.
Every few hundred thousand years, the Earth's magnetic field activity causes the reformation of the North and South poles, the last time it happened was 780,000 years ago. It can lead to changes in the surface conditions, deplete the ozone layer, and threaten human life.
Germs and humans, a global infectious disease, have always coexisted, but sometimes this balance can be upset. The Spanish flu of 1918-1919 killed more than 20 million people. The Black Death in the Middle Ages in Europe claimed 2.5 million lives and directly reduced the population of Europe by one-third. From the end of 22 to the spring of 23, severe acute respiratory syndrome (SARS) caused a global infection, causing more than 700 deaths. With the outbreak of avian flu this year and multiple deaths from avian influenza viruses, experts fear that a global catastrophe could be caused if the virus infects humans after a genetic mutation.
The planet is getting warmer and warmer, and the vast majority of scientists believe that humanity is to blame. Disasters such as floods caused by global warming are already being felt by everyone. Recently, experts at Harvard Medical School in the United States warned that this change will also cause a large epidemic of various infectious diseases. In addition, rising temperatures are making already scarce water resources even scarcer, and a floating city like Venice may soon become a land-based city.
The destruction of forest resources and the destruction of ecosystems such as rare animals have long attracted the attention of the world. On the other hand, in order to meet the needs of population growth, human beings have reclaimed wasteland to build houses and develop agriculture, virtually destroying the ecology of various wild plants and animals, several crops have replaced diverse plants and animals, and more chemicals have been used in the human environment. This is a big problem that has not been taken seriously because it has not yet caused damage to the entire ecosystem. But by the time enough attention is taken to it, I'm afraid it's too late. According to surveys, at least 30,000 species are extinct every year due to human activities. The consequences of all this are unimaginable. From this point of view, is the development of modern human civilization pushing towards the progress of destruction?
On the one hand, we are destroying natural species, and on the other hand, we are creating new species through genetic technology. Genetically sourced crops may be tastier, more nutritious, and genetically repairable DNA ......But it's probably also very big. While there is no evidence that GM food is unsafe, it does have unsafe factors, such as the fact that microorganisms that have evolved mutations can be difficult to control. What is even more terrifying is that if human beings use biotechnology to do bad things, such as creating viruses like anthrax, or even replicating human beings, the consequences derived from various biotechnology make it easy for human beings to self-destruct without realizing it.
This is the consensus of many scientists who believe that the chain reaction caused by particle accelerator experiments will ruin the entire world. Although particle accelerators are beneficial to human beings, such as cancer, etc., their lethality is basically the same as that of lasers and microwaves, and improper use will cause human beings to have the tragedy of cannibalism.
Many scientists believe that nanotechnology can revolutionize the twenty-first century, thereby updating the way transistors are made, and allowing the Internet to truly introduce mankind into the information age. However, there are advantages and disadvantages to everything, and the bad information disseminated in the information age may have a more destructive power on the human mind than nuclear weapons, and if it is not properly used, it will bring great disasters to mankind.
Humans have always wanted to build intelligent robots, but one day they may replace us and conquer the world. So far, there have been no robots that can replace humans, but some experts believe that by 24 years, robots will have the same intelligence as humans, or even better than humans, and sociologists suspect that our culture, and even the human species, may die out as a result.
The rapid materialization of modern society has led to a sharp increase in the sense of alienation between people. The World Health Organization (WHO) estimates that five million people worldwide suffer from mental illness, and depression may be the second cause of death by 22 years, and the increase in human life expectancy will make people endure loneliness and loss for longer. At present, some medical workers believe that people can live to be 200 years old or even longer, and if this becomes a common phenomenon, the psychological problems faced by society will be unimaginable.
The 911 incident in which terrorists hijacked a plane and crashed into the World Trade Center in New York, causing huge losses to people's lives and property, and causing panic in the international community. (*Available: **Tiger TV, NYC-IMC, Big Noise Tactical).
The 1995 Tokyo subway gas incident has been shocking to this day; 2. The 911 incident in the United States once again plunged the world into the threat of terrorist organizations. There are many organizations in human society that are equipped with nuclear, biological, etc., and once these organizations resolve disputes by violent means, they are enough to pose a threat to all mankind.
This is not science fiction**, and with the available evidence, scientists generally believe that aliens do exist. From the flickering technology of building aircraft, scientists speculate that they have mastered a higher level of technology than humans and can break through the limitations of space. Many UFO events have shown that aliens are directly studying our human body, and some have even found offspring of humans mating with aliens. Scientists even suspect that modern computer technology is likely to be transmitted to humans by aliens in a special way, with the aim of creating an environment suitable for them and replacing humans on Earth.
From the above modern scientists' inferences about dozens of disasters that cause first-class destruction, it is not difficult for us to find a fact, a considerable part of which is caused by human beings, and the negative effects brought about by the development of human science and technology have actually caused concern among people of insight.