According to the results of a study published by "The Future of Earth", between 1979 and 2016, due to global warming,The global cryosphere is shrinking by an average of 8.5 percent per year70,000 square kilometers。Global warming is only one of the three major disasters that mankind may face in the future, and this is absolutely not nonsense, and we must pay enough attention to it.
Global warming has evolved from an ethereal scientific concept to a real threat to human lifeGlobal warming is caused by the accumulation of the greenhouse effect, resulting in an imbalance in the release and absorption of the earth's earth-air system, causing the surface temperature to rise, in short, global warming will endanger the survival of human beings by changing the surface environment.
Global warming**.
When the temperature rises abnormally, disasters will ensue, because the global temperature will rise even by only 01 degree is also an extremely powerful thermal energyAnd this heat energy will bring undesirable changes to our air and oceans。Super typhoons, hurricanes, and even tsunamis can be triggered, and any of the above disasters are enough to bring a devastating blow to the normal production and life of human beings.
In 2006, a typhoon named Sangmei formed in the northwest Pacific Ocean and eventually made landfall in Cangnan County, ZhejiangThe wind speed at the time of its landfall reached an astonishing 17, that is60 m sec。You must know that the wind speed of a force 12 gale has reached 327 meters per second, capable of blowing over hundreds of tons of trains, and even throwing 20 tons of empty oil tanks into the air, while a force 17 gale is twice as strong as a force 12 gale.
Under the hit of a once-in-a-century typhoon like Sangmei, Zhejiang and Fujian were hit hard, and some towns were even devastated. The cause of Sangmei is inseparable from global warming, and rising temperatures are endangering human survival.
Artificial intelligence is also one of the three major disasters that humanity can encounter. There is no doubt that artificial intelligence can bring changes to human society, and in all walks of life, the application of artificial intelligence has greatly improved the efficiency of human life and production, but at the same time, while enjoying convenienceWe must also recognize the dangers that AI can bring
Artificial intelligence has advanced to the point where it can simulate the thinking of the human brain and make optimal decisions based on data under current conditions. But compared to the more flexible and neutral side of the human mind,There is a data-based bias in AI decision-makingFor example, artificial intelligence applied in the judicial system in the United States makes a decision that is impossible in the eyes of a human judge, and it automatically locates people of colorHigh-risk criminal groupsand simulated unfair sentencing.
What is even more worrying is the uncontrollable side of artificial intelligence, at present, human beings are still restricting artificial intelligence through **, but this constraint is not necessarily effective. For example, two artificial intelligence on Facebook once suddenly started communicating in a language that humans cannot understand in a conversation, and researchers believe that this is because the nature of artificial intelligence's self-learning Xi is aware of itHuman language is not the most efficient communication tool, but that's enough to say that any AI hasUncontrollableside.
The ability of artificial intelligence to learn Xi is beyond the reach of humans, which raises a huge problem. What kind of decisions would AI make if one day it realized that it was already smarter than humans?Considering that human society is now highly intelligent, the awakening and reversal of artificial intelligence is likely to cause unpredictable consequencesIt is even possible that human beings will be eliminated by new life forms created by their own hands。The development of AI must be limited to ensure that the impact it exerts on human life is limited to the positive.
The last time an asteroid hit the Earth, it directly caused the extinction of the dinosaurs, the previous dominant species of the Earth, and the same fate could happen to humans. According to NASA scientistsAn asteroid, codenamed Bennu, is likely to hit Earth on September 24, 2182, that is, more than 100 years later. The energy generated by the impact is equivalent to 24 megaton hydrogen bombs, enough to destroy any large city.
In fact, it is not the first time that scientists have discovered Bennu, the asteroid's orbit approaches the Earth every 6 years, and due to the influence of gravity, Bennu passes by the Earth every timeThe distance between it and the Earth will be closerHowever, if the current orbit continues, it is possible that Bennu will completely coincide with the Earth's orbit in 2182.
If Bennu's collision with the earth is not enough to lead to the extinction of humanity,The asteroid, codenamed Apophis, is definitely qualified to ring the death knell of human extinctionAccording to NASA calculations, the probability of the asteroid hitting Earth in 2029 is as high as 27%。
If Apophis really collided with the Earth, it would produce 6,400 trillion kilojoulesEquivalent to 15300 million tonnes TNT explosive equivalent。You must know that the largest yield of the hydrogen bomb that mankind has ever tested is only50 million tonsIf Apophis really hits the earth, human civilization will also be wiped out, and the whole world will be destroyed by the huge impact caused by the impact.
In terms of the current level of human science and technology,All three of these disasters are difficult to deal withGlobal warming is a by-product of the progress of human civilization, and it is difficult to get ** unless mankind enters a new stage of development. Artificial intelligence is Pandora's box, which cannot be closed if it has been opened by humans, and the only way is to restrain the development of artificial intelligence as much as possible. As for the asteroid hitting the earth, at present, human beings basically have no ability to resist, and the only way is to move to a new homeland, but the aerospace industry of mankind is still in a fairly early stage, and it is too early to talk about the arrival of this day.