Some information about the dangers facing the planet

There are holes in the ozone layer.

The atmosphere is affected by greenhouse gases, and the Earth's surface temperature is rising.

The Earth's magnetic field is changing.

Many organisms are on the verge of extinction.

Greenhouse effect: Rising temperatures, environmental pollution, population expansion, and resource depletion.

The dilemmas facing the planet are:

One: Humans. Humanity itself is the greatest danger on the planet, and war is the first to bear the brunt. With the development of science and technology and the take-off of the economy, the lethality of human beings is getting bigger and bigger, and the damage to the environment is becoming more and more intense. The greatest possibility of destroying the earth and human beings is the waste residue and exhaust gas emitted by human beings themselves to the earth and the flames of war, and human beings have caused a painful environment for themselves.

Two: Extreme climate.

Extreme weather is warming the world, and the greenhouse effect on the planet is intensifying day by day. The land is unusually arid, and the desert area is expanding day by day. This is the killer of all life on Earth.

Three: An asteroid hits the Earth.

It is no longer news that an asteroid has hit Earth, and the power it has caused can be devastating to life on Earth. It may be that after being hit by an asteroid, the Earth still exists and continues to operate as usual, but life on Earth is not immune to this catastrophe. This is the most helpless but terrible crisis facing the life of the earth.

Four: Volcanic eruptions.

The recent volcanic eruptions in Hawaii and Guatemala in the United States are deeply distressing. This is the wrath of the earth, and its smoke and dust can bury hundreds of miles of land and destroy plants and animals. Such devastation makes people feel apocalyptic, and the energy of the earth's wrath cannot be stopped by humans.

Five:**. **suddenness, human beings cannot**. It has brought sudden and tragic destruction to the life of the earth, and seriously endangered the life of the earth. ** The tsunami caused is even more terrifying, capable of destroying coastal cities, which is also a disaster from which mankind is powerless.

Six: Floods. The catastrophe of floods has brought great destructiveness to human beings. Floods often occur in densely populated areas with concentrated rivers and lakes, and abundant rainfall. And flood disasters can be cyclically reversed, and there is an ocean when floods occur.

It often brings about the destruction of life on Earth in a short period of time, leaving human beings with powerlessness and frustration.

The dilemmas facing the planet are:

1. Alien plague. Scientists have found signs of ancient life on Mars from Martian meteorites. There are fears that extraterrestrial pathogens could wipe out life on Earth. However, to date, no evidence has been found that extraterrestrial pathogens play a role in diseases on Earth.

2. Extraterrestrial impact. Some theories suggest that the extinction of the dinosaurs was caused by an asteroid hitting the Earth. Leaving aside the correctness of this theory, will there be a huge meteorite hitting the earth in the future?

It is believed that with the development of science and technology, human beings are fully capable of preventing this kind of disaster.

3. Volcanic eruptions. Some scientists say that every 50,000 years, there is a volcanic eruption on Earth.

The probability of a volcanic eruption is several times that of a meteorite hitting the earth, and once a volcanic eruption occurs, it is enough to instantly change the terrain and change the earth's climate, causing a global disaster.

4. Super plague. In the history of mankind, the super plague has hit human society many times, and the drug resistance of some pathogens is also very strong, and even some diseases have no best solution so far. With the development of science and technology and the advancement of medicine, it is believed that human beings will overcome all diseases.

5. Global nuclear war. Nuclear ** has great power, and once a global nuclear war breaks out, it will cause a devastating disaster to the earth.

6. Extreme climate. Extreme weather extremes such as droughts, floods, tsunamis, hurricanes, and melting glaciers can have serious consequences, but it is not yet known how severe they will ultimately be. It is gratifying that curbing global warming has become the consensus of all mankind, and it is hoped that the occurrence of extreme weather can be reduced through people's efforts.

7. Gene superman. From American blockbusters, we have seen a lot of genetic supermen. Although these superhumans only appear in movies, with the advancement of genetic technology, genetic superhumans with extraordinary mental and physical strength may appear in the future.

What kind of impact will they have on humanity?

8. Artificial intelligence. Artificial intelligence is a hot word in the past two years. Some scientists speculate that in the next three or four decades, robots with the same mental functions as humans may appear, and these robots will perform the work performed by the human brain and become our heirs.

1. Global warming.

The temperature of the earth is quietly rising, and it has reached the point where it is noticed. It is a danger that should not be ignored, as it causes the melting of polar glaciers, brings frequent storms, leads to the decline of biological species, and can also cause sea levels to rise and flood coastal areas.

2. Ozone layer depletion.

The ozone layer is located in the stratosphere of the atmosphere within an area of 10 to 50 kilometers above the ground, and the ozone layer absorbs most of the sun's ultraviolet rays and blocks ultraviolet radiation to the ground, so it has a protective effect on life on Earth.

Since the middle of the 20th century, it has been found that the ozone concentration in the Arctic Circle has decreased significantly, and the ozone layer in the Antarctic Circle has also appeared a hole, and the serious consequences of ozone layer destruction cannot be ignored, it will increase the incidence of human cancer and cataracts, and damage the human immune system, and it will also seriously damage the marine and terrestrial ecosystems and hinder the normal growth of plants.

3. Biodiversity is decreasing.

With the progress of science and technology and the development of industrial construction, the destruction of animals and plants by human beings is increasing day by day. Statistics show that 4,000,600 species are currently disappearing from the planet every year, and many more are under threat.

The 1996 report of the World Society for the Protection of Animals and Plants states:"A quarter of the planet's mammals are in danger of extinction, and 10 million hectares of tropical forests are destroyed every year"。The rate of destruction of biodiversity in our country is also alarming.

4. Acid rain spreads.

Human life and production activities emit a large amount of sulfur dioxide and nitrogen oxides, which are dissolved in water during rainfall, that is, acid rain is formed, acid rain is corrosive, and falling on the ground will damage the growth of crops, resulting in forest withering, lake acidification, fish death, and damage to buildings and places of interest.

5. Forests are declining.

The world's forest area is decreasing due to over-harvesting and inappropriate reclamation by humans, coupled with forest fires caused by climate change. According to statistics, in the past 50 years, the forest area has decreased by 30%, and the momentum of its sharp decline has not weakened. China's forest cover area is only about 1 3 of the world's average forest cover area, but the momentum of forest decline is not inferior.

1. There are more and more human cars, and the more difficult the car exhaust emissions are, the more they will come, polluting the earth's atmosphere;

2. The felling of trees, trees are the lungs of the earth, and it is now said that the world's trees are disappearing at an average rate of 6 square meters per second;

3. Water pollution slows down, disturbs the sewage discharged from factories and oil pollution caused by oil spillage caused by oil exploitation at sea;

4. Overexploitation of resources, such as minerals, oil, and groundwater.

1. Human cars are becoming more and more famous, and more and more automobile exhaust emissions are emitting, polluting the earth's atmosphere;

2. The early felling of trees, trees are the lungs of the earth, and it is now said that the global trees are disappearing at an average rate of 6 square meters per second;

3. Water pollution, pollution from factories and oil pollution from oil spills caused by oil extraction at sea;

4. Overexploitation of resources, such as minerals, oil, and groundwater.

1. Climate change.

Likelihood of a temperature increase of more than 2 degrees Celsius in the next 70 years: High risk factor: 6

2. Telomere loss.

Likelihood of a sharp decline in the population due to telomere loss in the next 70 years: Low risk factor: 8

3. Virus Likelihood of a deadly virus in the next 70 years: Very high risk factor: 3

Fourth, terrorism.

Likelihood of a major terrorist attack in the next 70 years: Very high risk factor: 2

5. Nuclear war.

Likelihood of a global nuclear war in the next 70 years: low.

Risk factor: 8

6. Meteorite impact.

Likelihood of the Earth being hit by a large meteorite in the next 70 years: Medium risk factor: 5

Seventh, the robot is mainly anti-customer.

Likelihood of the emergence of high-IQ robots in the next 70 years: high.

Risk factor: 8

8. Cosmic rays.

Likelihood of a supernova explosion in the next 70 years: low.

Risk factor: 4

9. Supervolcanoes.

Likelihood of a supervolcanic eruption in the next 70 years: Very high risk factor: 7

10. Black Holes The probability that the Earth will be swallowed by black holes in the next 70 years: extremely low.