Ultra-Dimensional Technology Era

Looking at the Yangzhou fried rice on the carton, he turned his head in surprise and asked, "Gao, it doesn't mean that there is very little rice due to the impact of the rice plague."

"This is artificial rice!" Gao Zhongxuan explained with a smile.

"Artificial"

"It is synthesized from starch and other natural materials, mainly to meet the needs of the rice consumption area, and it is very safe."

Marko Fischer took a few mouthfuls and found that the rice tasted similar to the rice in the Chinese restaurant before.

The literacy of a scientist has allowed him to let go of some psychological burdens.

In fact, his worries are completely unnecessary. The country now attaches great importance to food safety. Although new humans are not afraid of getting sick, ordinary people can't bear it.

Browsing some webpages while eating, he felt that his worldview was being subverted as he got to know more about this mysterious oriental country.

No wonder many German physicists like to come to China over the years.

There are no surging refugee waves and anti-intellectual people here, and there is no greening and blackening like Xizhou, and the science and technology are not inferior to Xizhou.

Unknowingly, the train traveled through cities and finally arrived in Xi'an.

As soon as Marko Fisher got off the train, he saw his old colleague who was already holding a sign, and ran over excitedly to hug him.

And Gao Zhongxuan changed trains here, took another high-speed rail train, and headed for his hometown Yulin City.

Originally, the railway from Xi'an to Yulin was an ordinary railway, but it was upgraded and transformed into a high-speed railway this year.

With excitement and apprehension, watching the scenery outside the car window keep receding, it is inevitable that I feel a little timid about being close to my hometown.

Gao Zhongxuan, who has not been home for almost a year, can feel the obvious changes in his hometown.

The high slopes of loess, which were bare or khaki before, gradually became more green, blue and white.

Green is shrubs, trees, and grasslands, blue is artificial lakes and rivers, and white is glass greenhouses or three-dimensional agricultural buildings.

The sky is no longer gray, but a very clean blue.

As the train entered Yulin, this change became more and more obvious. The desert or windy beach was gradually being eaten away by bushes and grasslands.

After submitting the two tasks of the company, I closed my laptop and prepared to get out of the car and take the car home.

After the train passes through two pipelines, one large and one small, Yulin Station is not far away.

Gao Zhongxuan, who was pulling the suitcase, finally arrived at the station and returned to the hometown he had been dreaming of.

There are many wanderers who returned like him.

2Chapter 16 Life Limits

Take the bus back to Huangshatou Town.

Gao Zhongxuan propped his chin while looking at the lush greenery outside the car window.

After the transformation of cooperatives, agricultural workers and self-employed workers coexist in many rural areas, and the retirement and reemployment of agricultural workers have entered the promotion stage.

His grandparents are still alive, and the two elders have caught up with the last train of the biological computer. If the biological computer is launched in a few years, the two old people may not be able to survive until then.

Although bio-computers cannot increase the limit of human life, they can increase the life span of human beings.

It seems that these two sentences are a bit contradictory. In fact, the life limit of organisms ≠ life span.

The life limit of human beings, in theory, is generally believed to be around 120 years old, which is derived from a scientific and rigorous theory, which is the famous Hayflick limit.

The aging and death of the human body is due to the aging and death of body cells, and human body cells will undergo division, and new cells will replace aging and apoptotic cells. However, this division is not unlimited.

Normal somatic cells can divide about 50 times on average, and the cycle of each division is about 2.4 years. According to calculations, the limit life span of a person is about 120 years old.

So why can human cells only divide 50 times? Is it possible to increase the number of human cell divisions through technical means?

This requires knowing why human cells can only divide 50 times

To put it simply, there is a piece of material called telomere at both ends of the gene. Telomeres play an important role in the process of cell replication and are mainly responsible for maintaining the integrity of chromosomes.

However, in most somatic cells, the length of telomeres is limited, and as the number of cell divisions increases, telomeres will gradually become shorter.

When the telomere reaches a critical length, gene expression will be affected, resulting in changes in expression, leading to cell senescence and death.

This mechanism is the biological mechanism behind Hayflick's limit theory.

Obviously, this is a cutting-edge scientific research project in life sciences, and Fang Ge and the others are currently researching this technology.

However, even if cells can only divide 50 times, the current average lifespan of human beings still has not reached the limit lifespan. [Note: The current average life expectancy of human beings is about 65-80 years old. ]

After the biocomputer is implanted, the new humans will not be harmed by diseases, viruses, and bacteria. In addition, the biocomputer will continuously eliminate harmful substances in the body and maintain human cells.

The lifespan of new humans can reach the human life limit of about 120 years.

And before the cell's Hayflick limit is reached, a relatively healthy and awake state can be preserved.

At present, the Institute of Life Sciences of the Academy of Sciences, on the one hand, is researching breakthroughs in the division limit of gene telomeres, and on the other hand, is researching stem cell cloning and stem cell repair of brain cells and cardiomyocytes.

As long as there are breakthroughs in these two aspects, human life can be truly improved.

……

Gao Zhongxuan's grandparents are 76 years old and 78 years old.

A biocomputer was just implanted some time ago, and it is now enjoying its second spring.

The retirement system for agricultural workers began to be implemented in some areas this year. The retirement age is 70 years old, and the pension is currently 2000 yuan per month.

The reason for retirement at the age of 70 is mainly due to the implementation of the new human plan, and the human life span has reached the limit.

In this way, it is too early to retire at the age of 60, and some agricultural workers can choose to re-employ or start a business after retirement, and re-employment will not affect the agricultural workers' pension.

Just like Gao Zhongxuan's grandfather, after retiring this year, he chose to become a forest ranger.

The bus stopped at the entrance of his hometown.

"Huangshatou Beicun is here." The driver shouted loudly while pressing the door switch.

Gao Zhongxuan, who had a look of astonishment on his face, finally came to his senses, and quickly got out of the car with his suitcase and backpack.

After the bus left, he stared blankly at the unrecognizable Huangshatou North Village. If it weren't for the big stone tablet standing beside the road, which was engraving the five characters of Huangshatou North Village, Gao Zhongxuan probably wouldn't be able to find his hometown. .

Rows of single-family small villas, an artificial lake with a radius of no less than 1 kilometer, is on the north side of the village gate, and weeping willows, poplar trees, and white mulberry trees are planted on the lake embankment.

On the south side corresponding to the artificial lake is a large glass greenhouse shining in the sun.