Video spoilers history, starting with the blitzkrieg on Poland

A new sky screen appears.

The video shows a simulated Earth in outer space, with countless rays flying out from the Earth and enveloping the Earth.

The sky curtain also began to narrate:
【Did you know? The Earth's protective shield may be quietly failing? 】

[On the Earth we live on, there is an invisible, intangible, but vital protective shield - the Earth's magnetic field. 】

[It is like a loyal guard, silently protecting life on Earth and resisting various threats from the universe. ]

[However, you may not know that this protective shield is changing. ]

[The strength of the Earth's magnetic field has dropped by about 200% over the past 10 years.]

[And there is a possibility of "geomagnetic reversal" in the future! ]

What on earth is going on?

What impact will it have on our lives?

[In simple terms, the Earth's magnetic field is driven by the convection of liquid iron and nickel inside the Earth, and its principle is similar to that of a generator. ]

[The Earth's outer core is mainly composed of high-temperature liquid iron and nickel. ]

[Under the influence of the Earth's rotation and other complex physical processes, these liquid metals undergo convection, which in turn generates electric current.]

[The electric current in turn generates a magnetic field.]

[The average strength of this magnetic field is about 50 microteslas. ]

[It is strongest in the Arctic and Antarctic regions and relatively weak in the equatorial regions. ]

[Don’t underestimate this seemingly weak magnetic field, it is of great significance to the survival of life on Earth. ]

[It is like a huge shield, blocking up to 99% of the solar wind and cosmic rays. ]

[It blocks the deadly radiation from deep space for life on Earth. 】

[However, scientists have discovered through precise observations and research that the Earth's magnetic field is not static.]

[According to the 2023 report, the strength of the Earth's magnetic field has dropped significantly over the past 200 years.]

[From about 55 microteslas to 50 microteslas, a decrease of 10%. ]

[Among them, the situation in the South Atlantic Anomaly is even more severe, with the magnetic field intensity dropping by 30%, forming an obvious magnetic field depression.]

[European Space Agency satellite data shows that the magnetic pole is also drifting faster. ]

[The North Magnetic Pole moves up to 50 kilometers per year.]

[Geological records show that Earth's magnetic field reverses every 20 to 100 million years.]

[That is, the north and south poles swap positions. ]

[The most recent reversal occurred about 78 years ago.]

[The current decay rate of the Earth's magnetic field is 0.05% per year, which is significantly faster than the normal fluctuation range. ]

[Although scientists estimate that even if the geomagnetic reversal occurs, it will take at least several thousand years, this trend of change has still attracted widespread attention. ]

Why does the Earth's magnetic field reverse?

[Scientists believe that geomagnetic reversals are caused by dramatic changes in the convection patterns of the outer core. ]

[Core convection is affected by many factors, including mantle heat flow and Coriolis force. ]

[Once these factors cause the convection pattern of the Earth's core to become unbalanced. ]

【The magnetic field will gradually weaken. 】

【And multipolar and non-dipole fields may be enhanced. 】

[In this process, the north and south magnetic poles may split into multiple poles. ]

[The global magnetic field has entered a chaotic "multipolar state." ]

[Over time, a new dipole field begins to rebuild, and the north and south poles eventually exchange.]

【The magnetic field gradually returns to a relatively stable state.】

[A simulation experiment in 2022 showed. ]

[The entire geomagnetic reversal process will last from 1000 to 10000 years. ]

【During this period, magnetic field strength may drop to 5-10% of normal. 】

[Its protective capabilities will also be greatly weakened. ]

……

Outside the sky.

Qin Dynasty.

Fusu looked at the demonstration screen on the sky screen and said with some concern:

“Although I’m a little worried.”

"But it looks like the Earth's magnetic field is a very important protective measure."

"Perhaps the survival of the people of the world cannot be separated from the protection of the earth's magnetic field."

"If the magnetic field really decays, disappears, or reverses, it will definitely be an unprecedented catastrophe."

Speaking of this, Fusu thought quietly again.

If it were the short-lived Qin Dynasty, there would probably be no need to worry.

But now we have the help of Tianmu.

Daqin may be getting better.

It may last for a thousand years.

Then the probability of geomagnetic weakening may be much higher during the Qin era.

The sky continues.

So, what happens during a geomagnetic reversal?

[If geomagnetic reversal really happens, it will bring a series of serious consequences to the Earth. ]

[First, high-altitude flying carries huge risks.]

[When the magnetic field weakens, high-energy particles carried by cosmic rays and solar wind can more easily reach the Earth's upper atmosphere.]

[For aircraft flying at altitudes above 10 kilometers, the radiation dose may double.]

[This greatly increases the risk of cancer for pilots and passengers. ] [At the same time, a 2021 study in Science magazine warned. ]

[Bombardment of high-energy particles could damage the ozone layer, reducing it by 10-25%.]

[After the ozone layer is destroyed, ultraviolet rays will be greatly enhanced, which will not only lead to a sharp increase in the incidence of skin cancer. 】

[It will also seriously damage the ecological balance, and the survival and reproduction of many organisms will be threatened. ]

【Second, satellite systems will suffer severe damage. 】

[Previous solar storms have caused satellite failure rates to increase by 10%.]

[During geomagnetic reversals, the Van Allen radiation belts that protect Earth's satellites from radiation will also weaken.]

[The satellite's electronic components will be extremely vulnerable to damage from the impact of high-energy particles.]

[This will lead to a complete disruption of satellite-dependent technologies such as GPS positioning and communications.]

[It is estimated that this could cause hundreds of billions of dollars in economic losses to the world. ]

【Furthermore, the power grid system is not immune. 】

【During geomagnetic reversals, the frequency of geomagnetic storms increases.】

[The power grid outage could last for months, which would plunge human society into chaos and cause economic losses of up to trillions of dollars.]

[It may even cause humanity to temporarily regress to the era of steam engines without electricity.]

[In addition, the weakening of the Earth's magnetic field may also indirectly affect the climate. ]

[During a reversal, the solar wind can change the high-altitude ionosphere and disrupt the jet stream, which can cause extreme weather.]

[For example, Europe may experience flooding, and parts of Asia may face drought.]

[In addition, changes in core convection affect heat flow in the mantle.]

[Although the evidence is limited, some studies have speculated that volcanic activity may increase as a result.]

【And the most far-reaching impact. 】

【It is due to atmospheric escape. 】

【Just like the tragedy on Mars. 】

[After losing the protection of the magnetic field, the solar wind stripped away the atmosphere and water of Mars in just hundreds of millions of years, leaving only a rusty red desert.]

Outside the sky.

Zhuge Liang was also quite shocked when he saw this.

“Mars is desolate, and everyone knows it.”

"Looking at the sky, it seems that the Earth will also change due to the magnetic field."

"And it might become a desert like Mars?"

"I observed the stars at night and found that the earth is very stable, enough for countless lives to thrive."

"But now it seems that there is life on Earth, and there are us humans."

"The probability is extremely small."

"It's really not easy for humans to exist on Earth."

【However, there is no need to panic too much. 】

[According to the latest forecast in 2025, the probability of geomagnetic reversal in the next 1 years is only %. ]

[It should be noted that the rate of geomagnetic decay does not decline in a straight line. ]

【After many geomagnetic attenuations in history, the intensity has rebounded. 】

[Even if it really starts in reverse. ]

[The long cycle of 7000 years also provides ample time for response. ]

【By then, perhaps we humans will not be completely helpless in dealing with it. 】

The video ended, and comments started to pop up:

Is the source of the news reliable?

"Magnetic poles have flipped so many times, it's nothing new."

Will the Earth Become Mars in the Future?

"Mars is too small, so its magnetic field cannot last as long as Earth's."

"Why would I care if there's a flood after I die?"

"If we're going to die, we're going to die together. Why worry about it?"

《Trust in the wisdom of future generations.》

"The geomagnetic field will reverse after 1600 years. If our descendants still can't fly out of the solar system by then, then they can forget about it."

"Classic big news, no mention of Alpha Centauri fleet, right?"

"Compared to the magnetic field, I am more worried about the merger of the Milky Way and the Vega Galaxy in more than 30 billion years."

"What I am most worried about is that after 100 trillion years, the entire universe will fall into heat death."

"Everyone is joking, but I am really worried. I felt depressed after watching it."

"On June 6-1, under the bombardment of the solar storm, the Earth's magnetic field suddenly became abnormal. No wonder I couldn't sleep these two days."

"Ah, are you serious? No wonder the internet has been lagging these past two days. I thought something was wrong."

……

And outside the sky.

Warring States Period.

Zhuangzi had a completely different idea. He picked up a branch and drew on the ground while muttering to himself:
“People call the magnetic field a protective shield, but I see it as a butcher’s knife.”

"Because it is natural, but the reversal of the magnetic field is in line with the laws of nature."

"The flow and change of the earth's core is just like the Tao stirring in the Tai Chi, which is divided into Yin and Yang but is integrated into one."

“The heaven and earth have great beauty but do not speak of it, and the four seasons have clear laws but do not discuss them.”

"If you are willing to let go of your obsession with 'protection' and dance with the magnetic field, you may be able to see a wider and freer world." (End of this chapter)