Long before, when the Bluetoth Civilization was just defeated and a period of great technological development began, Tom had already dedicated a portion of his energy to the Earth ecological restoration project, and he had persevered for decades, continuing even now without stopping.

Although it was only a small fraction of Tom's energy, it was still an immense project for Earth.

During the previous war, although Earth was not significantly affected by the fighting from beginning to end, its surface ecological environment still collapsed due to Tom's massive industrial construction.

In those years, too much waste gas was discharged into the atmosphere, and too much wastewater flowed into rivers, lakes, oceans, and soil.

Some radioactive waste even rendered certain areas barren, turning them into death zones for life.

By the time the war ended, large swathes of Earth's surface had been ruined by Tom, becoming deserts, lakes had turned into cesspools, and fish and shrimp in rivers had all died.

In recent years, Tom dismantled and removed a large number of industrial facilities, then initiated dredging and purification projects for multiple rivers and lakes, excavating massive amounts of silt from riverbeds and lakebeds, processing them for purification, and then releasing them back into nature.

Tom also actively regulated Earth's climate, adopting various methods to restore precipitation, scattering plant seeds in mountains and forests, and cultivating various wild animals through artificial breeding, making every effort to restore Earth's ecology.

Currently, Tom has completed the vast majority of surface projects.

However, the results still don't seem very good.

"Alas, the air pollution during that previous phase was too severe."

Tom sighed softly: "I originally thought that after completing the ground and water body work, the atmospheric pollution would gradually lessen with the ecological self-restoration process. I didn't expect that I overestimated the Earth's ecosystem's self-restoration capability."

At this moment, Earth's atmosphere not only contained exhaust fumes and toxic substances discharged by Tom's large-scale industrial activities, but also stray bullets and shells from space—although they could not penetrate the atmosphere to hit the surface, their burning up within the atmosphere released heavy metal elements and toxic substances that composed them into the air.

Combined, these even gave Earth's atmosphere a slight toxicity at this moment.

Relying solely on Earth's ecological self-restoration capabilities could not repair such immense pollution.

Without repairing the atmosphere, even if Tom made many more efforts on the surface, they would likely have little effect.

This was a very complex, tricky, and troublesome matter. And at this moment, restoring Earth's ecology seemed to have little meaning for Tom.

After all, he was about to leave the solar system, and it was uncertain when he would be able to return.

But…

Tom still made up his mind without hesitation.

"I must restore Earth's ecology! There's no other reason; Earth is my home, the home of Human Civilization!

Previously, to defeat the enemy, I had no choice but to personally destroy Earth's ecology. Now, since I have sufficient industrial capacity, if I don't do it because it's too much trouble, not to mention whether my compatriots will forgive me when I find Human Civilization in the future, I won't even forgive myself!

The Mechanical Disaster's target is intelligent civilizations; if I flee, they will most likely have no interest in the solar system.

Incidents like the Bluetoth Civilization invasion are an even smaller probability within a small probability.

As long as I restore Earth's ecology, Earth's life will most likely be able to live peacefully on Earth.

So, let's do it!"

Having made up his mind, Tom immediately began researching Earth's atmospheric purification plan.

Currently, there was only one feasible plan: dispersing corresponding chemical substances into Earth's atmosphere, allowing them to combine with the toxic and harmful substances in the atmosphere, and then settling down as solids.

This way, the atmosphere could be purified.

The only differences lay in the choice of chemical substances and the specific dispersion methods.

However, after detailed simulations, Tom ultimately rejected this plan.

The reason was simple: the secondary disasters were too difficult to control, and the secondary damage to Earth's ecology was too great, potentially even leading to more harm than good.

This was a problem that even Tom's current technological means could not solve.

After continuously trying over a hundred chemical substances and conceiving hundreds of purification methods, all of which were rejected by the models, Tom gritted his teeth and made his final decision.

"Since these methods can't be used, then let's just use the most primitive, most brutal, and simplest method!"

What is the simplest air purification plan?

Clearly, it is to purify it little by little using physical or chemical methods.

Collecting air, purifying air, discharging air—that's all the process is.

Purify one cubic meter of air and discharge one cubic meter of air, purifying it little by little, eventually purifying the entire Earth's atmosphere!

The total mass of Earth's atmosphere is as high as 5.15 quadrillion tons.

Tom's scheduled departure time was still about 30 years away.

If the total mass of atmosphere to be purified was 60 %, which is about 3.09 quadrillion tons—after all, due to atmospheric distribution, Tom could not purify all of the atmosphere. And after calculation, purifying only about 60 % would already be enough to reduce toxic and harmful gases in the atmosphere below a certain level, greatly reducing their impact on Earth's ecology.

30 years, 3.09 quadrillion tons of atmosphere, averaging 103 trillion tons per year, which is about 3.26 million tons per second!

Let's do it!

Facing this enormous number, Tom did not hesitate. He immediately allocated the corresponding industrial power to begin producing the machinery required for this purification work, and then transported it to Earth.

Tom found approximately 10,000 air current convergence points—where strong winds blew year-round due to Earth's climate, causing extremely fast gas flow—and began constructing a massive facility there.

This facility was over a hundred meters tall and more than two hundred meters long and wide, filled with complex machinery and pipes inside.

In its center was a huge void.

This void traversed both sides of the entire facility, with a diameter of 60 meters and a cross-sectional area of over 2,800 square meters.

Inside it were more than 20 huge fans, each fan blade nearly 30 meters long.

At this moment, driven by the surging electricity from the nuclear fusion reactor, this facility finally began to operate.

The more than 20 huge fans began to rotate at high speed, emitting a loud and dull humming sound.

Thus, under the blowing of natural strong winds and the high-speed rotation of the fans, surging air rushed in.

As they passed through this huge void, the various purification methods Tom had pre-arranged—such as electrostatic adsorption, chemical reactions, membrane permeation, and laser ablation to destroy molecular structures—began to take effect, directly absorbing or destroying harmful substances in the air, converting them into harmless chemical substances.

After completing this series of purifications, these air currents were discharged from the other end of the void back into nature.

An endless stream of air began to converge towards this void, its speed even approaching 100 meters per second!

Calculated at this speed, the average amount of air processed and purified by this void per second was over 300 tons!

And Tom built more than 10,000 such giant air purification facilities on Earth!

At this moment, with the abundant electricity supply from numerous nuclear fusion power stations, these more than 10,000 air purification facilities began operating at full power.

If you find any errors ( broken links, non-standard content, etc.. ), Please let us know < report chapter > so we can fix it as soon as possible.