2020 has become a thing of the past. Although this double 20 years has passed, its impact on mankind continues. The epidemic has not ended yet, and it will continue throughout 2020. It has not shown any signs of stopping in 2021, and it will continue to develop.
The United Nations has stated publicly that 2020 is a year of turbulent disasters, and it is indeed the case. Everyone who has experienced 2020 should be able to see the occurrence of various disasters, so what disasters with greater impact have occurred in 2020? Let’s make a brief summary below.
With the continuous intensification of the greenhouse effect, the temperature of the earth is getting higher and higher, and the global temperature in 2020 has reached a very high level, comparable to 2016. According to the research of scientists, the year with the highest temperature was 2016, the hottest year ever. In 2020, it set a high temperature no less than 2016.
Under the influence of global warming, a series of chain reactions have also appeared. In recent years, the global temperature has continued to rise. If the country has the most obvious impact, it is probably Australia. Australia’s Climate Center was also announced in 2020, and Australia’s climate hit a record high.
Under the influence of high temperature, Australia is an area with very dense virgin forests, so the worst forest fires ever occurred. The Australian fire lasted for several months, and its impact was serious and far-reaching. This fire not only changed Australia’s climate and environment, but also caused a large-scale biological extinction of more than 3 billion. This is a catastrophe for the biosphere.
After the forest fires in Australia, East Africa did not stop, and also ushered in the largest locust plague in history. I believe everyone has heard of the terrible locust plague. In ancient times, the most feared natural disaster was the locust plague. There were overwhelming locusts, and there were no grains in the place where they passed. It can be said to talk about the great changes of locusts. Although human beings have now entered the age of science and technology, there are many ways to eradicate locusts, but there is still no better solution in the face of the overwhelming locust plague.
The locust plague in East Africa has affected many food effects and aggravated the food crisis in East Africa. Food is the foundation of human survival. If there is a food crisis, the impact will be very large. Therefore, we can see that food prices in 2020 will generally rise sharply.
In addition to the above two disasters, there will be many other disasters in 2020, such as severe storms caused by more severe typhoons, floods, continuous damage caused by viruses, and so on. Mankind has not been overthrown in the disaster-prone 2020. We have survived strongly. Now that 2021 has entered, many people will be concerned: What will mankind face in 2021?
In fact, most people are not optimistic about the year 2021. It is difficult to change the trend of global temperature increase. 2020 is a high temperature year that hits a record high, so will the temperature drop in 2021? Some people may say that this year’s winter is colder than in previous years, indicating that the earth’s temperature has dropped. Then in the summer of 2021, the temperature should be lower than in 2020. Is this really the case?
This possibility is very small. Yes, the winter is indeed colder than in previous years. Climate experts have also said that the winter of 2020 is a cold east. But this cold winter was not brought about by the normal climate, but was affected by the La Niña phenomenon. La Niña is a pronoun for extreme climate, and its appearance just indicates that the earth’s temperature is accelerating.
The climate anomalies brought about by global warming will become more and more obvious. Scientists believe that the future climate will be polarized and be very extreme, that is, it will heat to death in summer and freeze to death in winter. This polarization is The impact of extreme climate on life on earth and human survival will become greater and greater.
The United Nations also believes that 2021 will not be an ideal year. There is a high probability that a global disaster will break out even more severe than 2020, and humanity will face more problems than 2020. Therefore, we should not expect a better climate in 2021. We must prepare our minds in advance to meet the various natural disasters that may come in 2021.
The earth’s climate is getting more and more severe, making scientists feel helpless. Some scientists believe that the sixth mass extinction of the earth may have arrived, and mankind is in the midst of a new round of mass extinction. Some people may say that the mass extinction is a very terrible ecological disaster. Although the current earth environment is not good, we have not seen how serious it is. How can we think that it has entered the mass extinction?
In fact, many people have a misunderstanding about the mass extinction, that is, they believe that it can cause devastating extinction to life on earth in a short period of time. But in fact, in the past 500 million years, there have been five mass extinctions on the earth, except for the fifth time that an asteroid hit the earth triggered a global volcanic eruption, which caused the earth’s ecology to deteriorate rapidly. The other four mass extinctions lasted relatively long.
Every round of mass extinction has an early stage, a middle stage and a later stage, and the duration can often reach tens of thousands of years. Only in the later period of the mass extinction, due to the continuous deterioration of the ecology in the early and mid-term, will the ecological environment collapse, which will cause the mass extinction of the organisms.
In the early days of the mass extinction, the ecological environment has begun to change from good to worse. The current ecological environment of the earth is like this. Since mankind entered the industrial age, a large number of greenhouse gases and other waste have been continuously emitted, the greenhouse effect has become more and more serious, and the climate environment has become worse and worse. With the continuous deterioration of the earth’s climate, more and more biological species are extinct every year.
These performances are very similar to the situation in the early days of the mass extinction. Therefore, it is very reasonable for scientists to believe that humans have now entered the sixth mass extinction cycle. Hawking also predicted that if global warming continues to intensify, humans will not be able to survive on the earth.
Hawking’s prediction may indeed become a reality. It is necessary to know that when the greenhouse effect continues to intensify, there will be more and more problems, various natural disasters will continue to occur, and finally the entire ecological environment will completely collapse and enter an irreversible state. At this time, it is basically impossible for humans to reverse the ecology of the earth.
When the earth’s ecology completely collapses, the temperature of the earth’s surface will also reach 460 degrees Celsius like Venus. How can humans survive in such a high temperature environment? Therefore, the current rising temperature of the earth is only an initial stage of deterioration, and it has not yet reached the critical point of collapse. And mankind still has hope to reverse this situation.
To make the planet’s ecology change from bad to good, it is necessary to eliminate the root cause, and the root cause of global warming is the large amount of carbon dioxide brought by industry, to be precise, the large amount of carbon dioxide emissions brought about by the use of fossil energy. However, fossil energy is the foundation of human current scientific and technological development. We cannot abandon it. Only when a new and more powerful energy appears can it completely replace fossil energy.
And this kind of energy is the controllable nuclear fusion that scientists have been working hard to study. As long as it is realized, mankind will enter the era of nuclear fusion and enter a new energy era. At that time, fossil energy will naturally be replaced. Without the use of fossil energy, the problem of large amounts of carbon dioxide emissions will naturally be solved.
Although the ideal is beautiful, the realization of controlled nuclear fusion is not a matter of overnight. Scientists were studying and exploring it 50 years ago, but now it is still far from the realization of real controllable nuclear fusion. It will take 50 years to realize its conservative estimate, and it may take hundreds of years if it is not conservative. Hope to achieve.
The earth’s ecological environment is deteriorating very fast. If the earth’s ecology collapses due to rapid deterioration before the realization of controllable nuclear fusion, then even with controllable nuclear fusion, we will not be able to restore the earth’s ecological environment. Can only choose to migrate to the outer planet. Therefore, human beings are now in a race against time.