On December 21, 2012, the Mayan prophecy of the end of the world came as scheduled, a meteorite fell into the sky, passed through the atmosphere, and hit the Pacific Ocean straight up. Pen "Fun" Pavilion www.biquge.info

Before governments that already knew what was going on had time to cheer that they had survived the catastrophe, the CO2 that had been fixed in the hydrosphere and lithosphere suddenly spilled into the atmosphere during the meteorite impact on the ocean and the massive evaporation of seawater, far exceeding the equilibrium limit of the current atmosphere, overloading the surface environment into a large greenhouse.

Temperatures are starting to rise, but the changes are much more than that.

Due to the impact of meteorite impacts, submarine volcanoes and even land volcanoes began to be active frequently, and a large number of eruptions engulfed the forests, land, and cities near the volcanoes.

Driven by them, the poisonous gases that have accumulated in the earth's interior for an unknown number of years have also begun to overflow, a large amount of carbon dioxide and methane have been injected into the atmosphere, and the greenhouse effect brought by meteorites has been reflected in each other, creating various disasters in a very short period of time.

In addition, sulfur dioxide, which also escapes from the ground, rises to the atmosphere and combines with water to form an aerosol that reflects sunlight from the earth and creates an ice chamber effect.

The cycle of the greenhouse effect and the ice chamber effect intersects and repeats, one moment is extremely icy, the next is extremely hot, capricious, completely does not obey the climate laws of the past, extremely cold in summer, extremely hot in winter, and even extremely cold one minute and extremely hot the next.

Suppose a species adapts to extremely hot conditions, then the ice chamber effect will freeze it to death; Suppose a species adapts to the polar ice environment, then the greenhouse effect will heat it to death.

As for the homeothermic animals, they immediately enjoyed the treatment of the two heavens of ice and fire, and died in the cross-care of ice and fire.

The planet is ushering in an era of chaotic climate capriciousness.

"Is this the end of the world?"

The colonel looked at the outside world through the window, with snow and ice drifting and heat waves soaring, "It's not what I imagined." ”

"What do you imagine the end of the world to look like?" Xiao Li stood behind the colonel, looking at the capricious climate, and he was not in the mood to do research.

There was a problem with the Earth Federation, but he didn't even know what the problem was, so how could he have the heart to do research.

He is more rational than emotional, but not temperamental.

"I imagine the end of the world as a meteorite hitting the earth, an explosion that spreads across the globe, a large number of people die in an instant, and then humanity begins to rebuild after the disaster." The Colonel's voice was slightly low, "It was a catastrophe for humanity, an uncontrollable sadness, but everything will be rebuilt. ”

"There is no more war, no destruction, the forest vegetation has recovered, and I can see the snow when I was a child."

"The river is clear and the sun is warm, and the bear child jumped into the river to catch a fish, but was hit by the fish's tail and splashed in the face, but unfortunately he can never go back to the past."

"You don't call it the end of the world, that's called turning back time." Xiao Li smiled, "Maybe you should listen to a song." ”

"What song?"

"'New Earth,' an old song." Xiao Li's voice changed and played a tune, "...... I wake up in a desolate earth...... The sun turns the earth into a desert ....... ”

"It's only when the smell changes, people start to mourn, and ironically, the air is good......."

"Are you sarcastic about me?" The colonel's tone became unpleasant.

"No, I just want to say that what is past is gone forever, it can never be recreated, and what can only be reproduced can only be information." Xiao Li said lightly: "This is the law of this universe: the timeline can be lengthened and shortened, but it cannot be reversed. ”

"Isn't the X-Men world just going back in time?" The colonel asked.

Xiao Li didn't answer immediately, but asked rhetorically, "Who told you that the world of X-Men has gone back to the past?" Have you ignored the results of so many scientists' discussions? ”

“…… I don't understand. ”

“……。”

Is it so incomprehensible to an atomic recombinant universe rollback? Xiao Li avoided this question, "Actually, what you said is impossible. ”

"Which paragraph?"

"Meteorites hit the earth, and the explosion spread around the world." Xiao Li said: "The explosion range and energy intensity are actually not much related, and the earth's bearing capacity is far beyond your imagination. ”

"In order for the explosion of a meteorite hitting the earth to spread around the world, the meteorite has to be large to a certain extent." Xiao Li paused, "I haven't calculated how big it is, but if there is really such a big meteorite hitting the earth, I don't think the explosion that may cause it will not be just killing humans as you imagined, but blowing up the entire earth...... The kind that was blown to pieces. ”

"In fact, as early as when the earth was still a nation, many scientists had a systematic discussion about the mass extinction caused by meteorites hitting the earth."

"In those discussions, the catastrophe caused by meteorite impacts on Earth was broadly divided into five levels."

"The first level is the meteor level."

Xiao Lidao: "This level of meteorite hitting the earth will actually have no impact on the earth, the only impact may be to bring a strange landscape, of course, if someone is unlucky, he happens to encounter a meteor that smashed on the top of his head before it burned out, he may also be stoned to death, but I think he suffered this kind of treatment...... How unlucky this man is! ”

"The second level is the crater level."

"Some small celestial bodies with a diameter of several meters, or even more than ten meters, hit the earth, due to the relationship between mass and volume, these meteorites will not burn up in the atmosphere, and when these meteorites hit the surface of the earth, they will immediately create craters, like those craters on the surface of the moon."

"The best example of this is the asteroid impact in Chelyabinsk, Russia, in 2013."

"The third level is the Local Destruction level."

Xiao Li continued: "Meteorites of this level are already large to a certain extent, their diameter is about 100m-150m, of course, this is only an approximate estimate, in the actual calculation, this estimate still needs to float upward, but no matter what, once such a meteorite falls, it will immediately cause a devastating blow to a certain area." ”

"In the response strategies of various countries, meteorites of this level need to be destroyed in advance, but fortunately, at least in modern times, no meteorites of this level have come to Earth."

"The fourth level is the mass extinction level."

Xiao Li said: "A celestial body of this level is about 50 km. ”

"In the universe, a celestial body of this level can only be called tiny, but for life on the entire earth, a celestial body of this level is already a celestial body of the mass extinction level, and once it hits the earth, it will immediately lead to a major reshuffle of Venus in the ecological circle of the entire earth."

"One of the most famous examples is the mass extinction of the dinosaurs."

"In the 80s of the last century, physicist Louis . Alvarets found that the level of iridium in the bottom layer of the possible storage of extinction information was much higher than the normal value of the surface environment, and this higher level was tens or hundreds of times higher, and iridium was highly ferrophilic. Alvarets first proposed that at the end of the distant Cretaceous period, an extraterrestrial meteorite struck the Earth, causing the mass extinction of the dinosaurs. ”

"As for the fifth level, that's what scientists expect the Earth to be destroyed."

A strange expression appeared on Xiao Li's face, "First of all, you need to distinguish the difference between the destruction of humanity and the destruction of the earth. ”

"In the past, the media used the phrase 'destroy the planet' when talking about nuclear weapons, but in reality this is impossible."

"Even now, the amount of nuclear bombs stored by mankind is unlikely to destroy the earth, it is at most to destroy the human race, and the earth is far stronger than the human race."

"But the level of destruction of the earth expected by scientists is a level of real destruction of the earth, which belongs to the imagination and the opening of the brain."

"To put it simply, a celestial body about the size of the Earth is either a little smaller, or a little bigger, in short, a very, very large kind of celestial body hits the Earth, and then with a bang, the Earth is torn apart."

"Can you imagine smashing two watermelons in front of each other and falling apart? The earth and the celestial body will also fall apart like watermelons. ”

The corner of the colonel's mouth twitched, is it really good to use watermelon to describe the earth? And is the hardness of the earth comparable to that of a watermelon? Well, although in the face of a celestial impact of that level, there is really no difference in the hardness of the earth and a watermelon.

"But fortunately, in the past, there has never been a disaster of this magnitude, otherwise, the earth would still be a flying star in the universe."

Flying stars, a kind of planet that has lost the gravitational pull of the star system to which it belongs, because it has lost the restraint of gravity, this kind of star wanders in the universe until it is captured by other stars or quasars with strong gravity, such as stars and black holes, and will stop its wandering journey.

"Now the Earth is facing a mass extinction meteorite impact." Xiao Li said: "This level of impact is actually not the explosion produced during the impact. ”

"To be honest, although this level of impact is many times larger than a local destruction level impact, it is impossible for the earth to withstand it, let alone the explosion that spreads to the whole world."

"Actually, the great thing about this level of impact is its impact on the environment."

"Powerful energy runs through the earth, causing a series of chain reactions that cause abrupt changes in the Earth's climate, causing a long period of climate change, such as the Ice Age."

"It's the climate that really destroys species – when a species can't adapt to that climate, that species is destroyed."

"But the climate has very little impact on human beings!" The colonel's brow furrowed, "Except for the coastal areas that are submerged, the other areas are only affected by the climate, but human beings have heating and air conditioning, ....... ”

He kept his mouth shut.

Because he thought about it, even if humans have heating and air conditioning, how can they be? Could they still be able to transform the environment of the entire planet?

Yes, there's nothing wrong with staying at home, especially in an air-conditioned room, to be immune to abnormal climate change, but how long can this air conditioner last?

One day, two days...... A month or two months?

The colonel felt that the whole month was hanging in the air, because the climate change was so unpredictable, sometimes hotter than the desert, and sometimes colder than the North and South poles.

One moment the ground is hot enough to stir-fry, and the other moment the ground is so cold that it drips into ice.

Who will come out in this environment?

If you don't come out, you can only wait for death.

"Yes." Xiao Li smiled faintly, "But what if this abnormal climate lasts for decades, hundreds of years?" And then the anomalous climate was followed by a long ice age, do you think human civilization could survive to that point? ”

"Never underestimate human technology, but never overestimate human technology."

"It's not as weak as you think, but it's not as weak as you think it is."

"So long?"

The colonel's brow furrowed fiercely, not because he was worried about the humans of this world, but because the long period of climate change would affect their plans.

To tell the truth, receiving the care of air conditioning in the base is not how harsh it is outside, but if you really want to go out, you can see from the fact that his brother came back two minutes after walking out, how bad the climate outside is, you know, his brother once lay on the snow mountain for a day and a night, but such an iron-clad man can't stand the fickle climate here.

"It's a long time, and because it's so long, species can be extinct, you know, any species has a superior existence, just like there are geniuses among human beings, and there are some strange existences in other species, such as very smart stars, or huskies who like to eat hot dogs, these can be divided into peculiar ranks."

"Short-term climate anomalies can cause a lot of damage, but it's almost impossible to wipe out species, and only in a long period of time will those species go extinct."

"And when the abnormal climate change dissipates, the ecosystem will usher in a new bloom."

"In fact, in a way, every climate change that can exterminate a species is a source of evolution for species on Earth, because every climate change of extinct species forces those species to evolve so that they can adapt more to the current environment, but this evolution is slightly more cruel."

"Of course, we don't need to worry about it for so long, because the gamma civilization will not let humanity go extinct, after all, they want a pasture, not a slaughterhouse."

"And they have the climate control weapon in their hands."

"What kind of big killer?"

"Exotic particles."