Chapter five hundred and nineteen environmental problems three
Chapter 519 Environmental Issues (3)
In this way, it can create a good opportunity for them to find the next host. Therefore, air pollutants are a key factor for the virus to spread smoothly in the air.
If our air was always very clean, then we might get fewer illnesses. At least we would get fewer influenzas.
However, there are more and more pollutants in our air. The main culprit is car exhaust. Because there are the most cars in cities, these cars cause serious pollution to the urban environment.
Although we have built the city very beautifully, with high-rise buildings everywhere, small gardens and green belts everywhere. We have also planted many large trees. We just want these green plants to create a good air in our city.
environment.
But in fact, these green plants cannot purify the air. At most, they absorb more carbon dioxide. However, car exhaust contains not only carbon dioxide, but also a lot of pollutants.
The main pollutants emitted by automobile exhaust are carbon monoxide, hydrocarbons, nitrogen oxides, lead, etc. According to statistics, every thousand cars emit about 3000kg of carbon monoxide, 200-400kg of hydrocarbons, and 50-150kg of nitrogen oxides every day; Los Angeles, USA
The pollutants emitted by mobile pollution sources such as cars in the city account for 90% of the total air pollutants. Car exhaust can be said to be the "culprit" of air pollution.
Carbon monoxide has an affinity that is dozens of times stronger than that of oxygen for hemoglobin in human red blood cells. After the affinity, it generates carboxyhemoglobin, which weakens the blood's function of transporting oxygen to various tissues, causing dysfunction in sensation, reaction, understanding, memory, etc., and in severe cases, it is harmful.
In recent years, with the rapid development of the motor vehicle economy, the production and use of motor vehicles have increased dramatically, and the environmental pollution caused by motor vehicle exhaust has become increasingly serious. The air pollution in many big cities has shifted from coal-burning pollution to coal-burning and motor vehicle pollution.
Mixed pollution and vehicle exhaust pollution have seriously harmed the environment and people's health.
Although this pollution has attracted social attention, and the country has begun to step up prevention and control, the country has not yet taken effective measures to completely solve the problem of motor vehicle exhaust pollution. Relevant prevention and control policies, laws and regulations are not yet complete, and various measures need to be further strengthened. Governance
The intensity is far from enough. Creating an environment with good air is also a symbol of building a modern and civilized city and is a top priority for environmental protection. Solving the problem of motor vehicle exhaust pollution is urgent.
However, the problem of automobile exhaust is a difficult problem to solve. Although many countries have already paid attention to this problem, it is a big problem to fundamentally solve this problem.
Cars have penetrated deeply into the work and life of ordinary people. We have become inseparable from cars. Without cars, we don’t know how to live. This is just like the relationship between mobile phones and human beings. We can’t live without cars all the time.
For us ordinary people, we don’t pay attention to environmental issues at all. We only believe in what we see. We never believe in things that we cannot see.
Since we modern humans have entered the market economy, the entire human society has been bound by the concept of money first. What we ordinary people pursue in our lives is nothing more than the word money.
Many of us only understand health by taking medicine when we are sick. We never think about the relationship between a person's health and the environment.
We also often say that diseases enter from the mouth. But we habitually call this mouth a mouth. In fact, this mouth is not a mouth, but a nostril. The nostril is the main cause of human illness. The nostril is the only part of the human body.
A channel that is always open. Our body is 'communicating' with the external environment all the time.
But most of us don’t take it seriously that illness is caused by breathing. Everyone believes that illness comes from the mouth. Diseases are all caused by what people eat. Of course, we cannot deny that some diseases may be caused by eating.
caused by unhygienic food.
But we humans have been eating cooked food for a long time. The food we eat has been processed at high temperatures. Various bacteria and viruses cannot survive in boiling water. No matter what kind of viruses and bacteria they are, they can be lost after high temperatures.
vitality.
But after we eat food that is free of bacteria and viruses, we do not stop getting sick because the food has been sterilized by high temperature. Although we eat high-temperature sterilized food every day, we still get sick when we should.
of.
This is mainly because in the process of high-temperature sterilization of food, although we kill the bacteria and viruses in it, we also kill a lot of active ingredients.
In fact, the food we humans eat does not mainly provide energy for us humans. The role of food in the human body is almost equivalent to the role of drugs in the human body. The food we eat, after digestion and processing, is actually
The body turns food into medicine.
Then someone has to ask. Since animals do not obtain energy from food, where does the energy of animals come from?
In fact, you may not believe it. In fact, most of the energy of the human body is produced by the body electrolyzing water to produce hydrogen, and then combining the hydrogen with oxygen to produce a large amount of energy.
After food enters the human body, it may also produce some energy in chemical reactions after digestion and attraction. But this is only a small part of the energy produced by the human body. Or is it because after these foods are converted into elements? After reacting with other substances,
Some energy is bound to be produced. This energy is just a by-product of chemical reactions.
The bodies of humans and all living things are machines that use energy efficiently. Only the life machines made by nature can directly convert water energy into electrical energy for the needs of the body. In other words, if the body is a machine, this is
It's like a machine that can 'boil' water.
And we human scientists, no matter how smart we are, cannot invent a machine that can 'heat' water. We have also dreamed of inventing an engine that can 'heat' water. But in fact, it is difficult for humans to do this.
.
Although humans can now electrolyze water into hydrogen and oxygen. However, the energy spent by humans to electrolyze water is far more than the energy produced by the hydrogen that humans have encountered. Because of this, we still cannot use machines to 'heat' water.
.A car is still a 'car' car, not a 'water' car.
It is almost impossible for humans to produce a machine like the human body. In fact, the human body is a machine. It is a nano-level machine composed of countless atoms. Its precision is far beyond human imagination.
Even if humans can explore to the edge of the universe, they still cannot understand the truth about the human body. Because to understand the truth about the human body? It is to understand the truth about life. How life came into being has always been an eternal mystery that can never be answered.
Regarding the mysteries of the human body, scientists can only further research and explore. Just want to explore the most essential secrets of life? It seems impossible. After all, humans are products of nature. As nature's
How can a child know all the secrets of his parents?
It is difficult for us to truly understand the mysteries of life. But we should know the importance of the environment to life activities. In the process of biological evolution, many organisms have become extinct due to changes in the environment.
But this change is only due to changes in the objective environment. It is not the original impact of organisms on the environment. Those extinct organisms in the process of biological evolution have never changed the environment, but the environment has changed them.
However, since humans appeared on the earth, they have begun the process of transforming the environment on a large scale. We have constantly adapted the environment to us. We have constantly taken things from the environment that are not very important to us.
But for the most important things we have, we don’t know how to cherish them at all. This is a very serious mistake. Our modern society is a wasteful society. What we have is not what we really need.
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Human beings are undoubtedly the most greedy animals in the world. We have more material things than any other animal. We have endless food to eat and endless clothes to wear. We also have endless material things.
We need an endless house to live in. But even so, we are still not satisfied and still want more from our living environment.
We dig coal, oil, and natural gas out of the ground, and then use them for us humans. We burn these energy sources that the earth has spent hundreds of millions of years forming. Then, we emit waste gas into the atmosphere.
We enjoy everything in front of us and take it for granted. Human greed is clearly exposed in the market economy.
Hundreds of years of industrial civilization have made us like parasites, constantly sucking the blood of Mother Earth. We are constantly destroying the balance of nature. We are constantly asking for things from nature. For us, it is basically
Insignificant things.
Air is the most basic substance we rely on to survive. It is the greatest guarantee for each of our lives to survive. However, many of us turn a blind eye to this kind of thing. It is as if all this is a matter of course for human beings.
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We live in high-rise buildings and live a luxurious life. But we are just animals that produce garbage. Every prosperous city is surrounded by just mountains of garbage. Our city is a super machine that produces garbage.
Human beings can survive for a week without eating and only drinking water. But if they only eat and drink water, they can only survive for three days. But if there is no air for us to breathe, we can't survive for more than three minutes.
Air is a very important thing for us humans. However, we humans don't cherish these things very much.
We all like to live in the city and feel that everything in the city is good, but nothing in the countryside is good. In fact, this is a wrong concept. The good things in the city are only visible on the surface.
These are material things. But the good things in the countryside are pure air that we don’t care about at all.
What will be the most expensive thing in the future will definitely be the purest air. Only pure air can make human beings live a long life. Dirty air will only breed all kinds of diseases in us.
However, due to the rapid development of modern industry, our nature has been severely damaged. The original pure air no longer exists. There are colorful and beautiful lives in big cities. But these beautiful things are all in one place.
In the dirty air.
If human society wants to continue to develop, it must control environmental pollution and restore the blue sea and blue sky to the earth. Only if we manage the environment well can we humans continue the fire of life. If we do not pay attention to environmental protection, we will just waste energy blindly.
, if we create pollutants, then we are devaluing our own lives.
But how do we change the traditional industrial structure so that our nature is no longer polluted by traditional energy? This is an urgent problem that needs to be solved. But it is also a difficult problem to solve.
Although we already know the importance of the environment. We know the importance of pure air. We know the importance of green water, green mountains, blue sea and blue sky. But how do we change all this, how do we make our sky pure, so that we can
Breathing the purest air is a very difficult world problem to solve.
Although we can move polluting factories to the outer suburbs of the city, our cars still have to shuttle around the city. Our car exhaust is still emitted in the urban air. How to solve the car exhaust problem is very important.
The problem.
The electrification of cars is obviously an irreversible trend. However, because the research and development of traditional batteries has encountered a bottleneck, it is difficult to achieve a breakthrough in a short period of time. If we want to fundamentally solve the problem of environmental pollution caused by car exhaust, we must first solve the problem of batteries.
Charging and battery life issues.
Only by developing new electric vehicles that charge quickly and have a long range can we fundamentally solve the environmental pollution problem caused by vehicle exhaust.
At present, the only new type of battery that can replace traditional batteries is graphene battery. This is a battery with fast charging and very large capacitance. If the research on this new type of battery is successful, it will definitely revolutionize the modern automobile industry.
But it is also very difficult to successfully develop graphene batteries. After all, our nanotechnology is not very mature. Although there are various nano products on the market, these products are just under the banner of nano.