The carriage rolled along the small road, and the person inside could still vaguely hear the clamor outside.
Laughter, cheerful chatter, shouts, and the sounds of handcarts and carriages constantly passing by—all of it drifted over.
Romon was the only one in the carriage. He casually rested his head against the back of the seat and began pondering the matter of the wheat stalks.
Just moments ago, as he watched those large carts pass by and heard that student's absentminded muttering, an idea had suddenly occurred to him. Once it arose, he could no longer suppress it.
Romon was somewhat excited. He was excited not merely because this matter could benefit his territory, but because through it, he had finally found his own understanding of nature.
"Biogas!"
Putting all those wheat stalks to use and producing biogas from them—this was the idea that had suddenly come to him!
Back when he had been on Earth, biogas was rarely used in cities. But in some fairly well-developed towns and villages, where large quantities of grain were grown, plenty of crop stalks and leaves would be gathered after every harvest.
Burning them was out of the question. Not only was that a waste of resources, it also polluted the environment.
Some rural areas transported those wheat stalks and corn leaves into biogas chambers, turning them into biogas that could be used for fire.
As an environmentalist, Romon had specifically studied the application of rural biogas before. He knew a thing or two about it.
No coal had been discovered in this world. After looking through its history, he had learned that this world was said to have only around a hundred thousand years of history. Naturally, that was nowhere near enough time for coal and petroleum to form.
In fact, Romon even