Stars are born in nebula and end their lives in their own collapse and explosion. The universe seems magnificent, but one day it will stop expanding and eventually die.

Everything has its beginning and end, nothing can remain forever, and naturally the same is true for humans. Although humans are currently the overlord of the earth, the first generation overlord, the strange shrimp has long been extinct without a trace.

As the first advanced intelligent life on earth, humans at least consciously know that they may become extinct. As long as we plan ahead, it may delay the speed of human demise.

There have been five mass extinctions in the history of the earth. These past have provided people with experience. Based on the current development of human beings, scientists have predicted five future events that may lead to mass extinctions of human beings. They are: global warming and the sun. Aging, asteroid impact, human nuclear war, artificial intelligence.

Since the new century, human cities have been developing continuously and climate issues have gradually come to the forefront. Global warming has become one of the recognized crises, and the fundamental reason for global warming is that the concentration of carbon dioxide in the atmosphere has seriously exceeded the standard.

At the end of the Permian period, a massive extinction occurred due to various reasons, and supervolcanoes were one of the reasons. The eruption brought out huge amounts of carbon dioxide, which directly led to the Triassic becoming the driest era in the history of the earth.

If the global warming in the Triassic period is due to environmental turmoil, then the global warming that humans are currently facing is created by themselves. Most of the energy we currently use is chemical energy, and they are buried deep in ancient organisms. After underground, it is converted through tens of millions of years of physical and chemical reactions.

Humans consumed huge amounts of fossil energy in the past two hundred years, and they would not affect anything, but the bad thing is that these fossil energy is rich in carbon elements, which is equivalent to humans releasing the carbon accumulated by the Earth for tens of millions of years in a very short period of time, destroying the The normal carbon cycle of the earth.

According to the IPCC report, since the industrial revolution in the 19th century, global temperatures have risen by an average of 1.2 degrees. Although this number is insignificant, it is a tangible move for the earth.

If this trend continues, the earth will experience a sharp heating soon, and then all the glaciers in the north and south will melt, and even become temperate climates to grow forests. These melted glaciers will increase sea levels by about 70 meters. Not only are the coastal cities not protected, but the entire mainland sector will be submerged by 60%.

In addition to global warming, the sun can also affect human civilization

Because the sun gives the earth light and heat, nourishes all things on the earth, which means that humans' survival depends extremely on the sun. If the sun changes slightly, it may have a huge impact on humans. It just so happens that the sun is not a very stable object, and every time the sun is inside the sun, it is very common. Huge amount of nuclear fusion is happening in seconds, and the entire sun is an extremely huge nuclear reactor!

As long as the sun is slightly stormy, the blow to humans may be devastating, not to mention that the sun will one day grow into aging and enter the nuclear fusion of helium atoms. The nuclear fusion of helium atoms is very unstable and will put the surface of the sun. Expand to Jupiter's orbit, and by then the earth will run inside the sun, and the earth will be burned by fire, let alone the survival of human beings.

However, the sun still has about 5 billion years of life, and the real disaster that may come at any time is the impact of asteroids.

65 million years ago, an asteroid hit the Earth, directly triggering the Cretaceous extinction, causing the extinction of 76% of species, including dinosaurs, which is only ten kilometers in size.

But it was the asteroid that was not worth mentioning about the size of the earth that led to a series of subsequent chain reactions, which directly led to the demise of the dinosaurs on earth at that time, because the impact not only knocked out a large pit at the impact site, but also caused the impact to be filled with a large pit. The earth's plates moved violently, resulting in large-scale volcanic eruptions and earthquakes and tsunamis.

Hawking warned humans about two things during his lifetime

The first thing is not to send human messages to the universe, as it may lead to aliens leading to human extinction. The second thing is to warn humans to be careful of artificial intelligence. Once they get out of control, they may directly replace humans in the future.

Due to childhood illness, Hawking only had the muscles in his eyes able to move. All daily actions are inseparable from the artificial intelligence system tailored by Google for Hawking. In this way, Hawking is a beneficiary of artificial intelligence, so why is he so panicked. they?

Perhaps it was Hawking who learned the amazing things about artificial intelligence that he was worried about whether they would replace humans in the future. In most people’s imagination, artificial intelligence cannot be separated from electricity, and if the wire is unplugged, nothing will be gone, but classic The science fiction film "The Matrix" tells us that eliminating artificial intelligence is far from as simple as imagined.

If the first four events are all human beings gradually demise

Then the nuclear war was immediately cleared to humanity. The little boy who was cast on Hiroshima during World War II fully demonstrated the power of nuclear weapons. As a mushroom cloud rose, the city under the clouds was immediately razed to the ground.

But in a sense, it is precisely because of the existence of nuclear weapons that humans have maintained general peace for so many years. Although there are always some small-scale conflicts on the earth, as long as the nuclear weapons remain unmoved, they can use the Dinghai Shen Needle The left and right will defend world peace, so nuclear weapons should actually win the Nobel Peace Prize.