The development of science and technology is a big example of disadvantages, urgent urgent urgent! But not too much! 300.~400 words, fast fast fast!

Human beings have mastered the nuclear energy technology but also brought the nuclear disaster of Hiroshima and Nagasaki, which brought the human beings fifty years of "horrible peace", and for the first time, human beings have the ability to destroy themselves. There have also been numerous nuclear accidents, most notably the Chernobyl disaster in the Soviet Union (please search the internet for specific data). The development of chemistry has given us unprecedented ability to modify nature, but our gunpowder and explosives have also harmed tens of millions of our fellow human beings. Our chemical synthesis technology has enabled us to create things that did not exist in nature, but now we are also plagued by white trash, poisoned by chemical pollution, and why so many children in our country are now suffering from leukemia is due to the use of chemical binders in home renovation, as well as ozone-destroying Freon. The development of oil exploration technology is the pace of human progress greatly accelerated we have been able to fly faster than the speed of sound, but this also brought too many wars and too much turmoil, but also make the earth began to cold fever. The development of biotechnology has given us the power to create life, which was previously monopolized by God, but it has also brought about ethical disorders. In short, the progress of science has always been accompanied by the danger of corresponding drawbacks, and today we must face up to these negative impacts or we may end up destroying the human race at our own hands.

The automobile, which is everywhere, not only causes great harm to the human body and mind, but also pollutes the atmosphere. All living creatures in the world have been victimized by this "technological product" to a certain extent, and it is selfish for human beings to disregard the safety of other living creatures on earth for their own convenience. To take a step back, automobiles are also very harmful to human beings. Freon in air-conditioners and refrigerators is also destroying our precious atmosphere. The so-called high-tech products have made the world dirty and rigid, and the free earth has been swallowed up by human beings, the free sky has been shrunken by human beings, and the free sea has been encroached upon by human beings.

Environmental pollution. This is the most direct and most conspicuous bad. 2:Species extinction accelerated. This is caused by environmental pollution and human hunting. Also belongs to the bad side of the development of science and technology. 3:The safety of human beings is getting more and more insecure. There are tens of thousands of crimes every day. Most of these crimes are committed with the latest technology. Gun crime, in particular, is a major threat to the general population. As we have seen in World War II, with the advancement of technology, wars now cause far more damage and loss than ever before. It may even cause the fate of the human race. 4:The physical quality of human beings is not as good as before. With the development of science and technology, gas cars, trains, airplanes and other means of transportation to make the human daily life has changed significantly, human beings are no longer always rely on their own two legs, and therefore the physical quality of human beings and the previous compared to the physical quality of human beings has been incomparable. In the past, Xiang Yu's "power to pull mountains and rivers to cover the Ruoxi" is no longer possible in today's society. And this situation continues to develop is likely to make people's limbs atrophy, so that human beings appear in a new form 5: a variety of emerging germs continue to appear, many germs have been far more destructive than the previous germs. This is due to the rapid development of medical technology to accelerate the mutation of viruses. So much so, that technology is no longer able to keep up with the speed of virus mutation. Perhaps one day the human race will be destroyed by a major plague.

Technological development, then oil! Oil was originally the heart of the earth's blood, that human beings are the heart of the earth's blood pumped, which is since the demise of the oil is also used to lubricate the core of the earth, oil if less, earthquakes are more, like a machine

Humanity crossed into the 21st century, the world has undergone more or less amazing changes. In the people for science and technology rapid progress in the development of rejoicing, and then experienced a better upset and even disaster. In addition to the panic brought about by the development of high technology, especially biotechnology, wars and diseases seem to bring mankind directly to the gates of hell. The invasion of various viruses, exhaust fumes from automobiles and factories have invaded our beautiful home. Why our homes are threatened, why trees are cut down in large numbers, why the air is not fresh, all of which is precisely the evidence that technology has brought about all sorts of crimes. Modern science and technology is to bring us some comfort and convenience, but also with the impact of a wide range, ask how to live comfortably without a good environment? If people do not hurry to remedy the mistakes they have made, mankind will be destroyed by technology.

Technological development has brought benefits to our lives, which we do not deny. However, we believe that the disadvantages of technology outweigh the advantages. First of all, although the automobile is convenient for us to travel, the exhaust fumes of the automobile cause environmental pollution, which affects the health of human beings. Secondly, the emergence of television and other entertainment facilities, although it brings convenience to people, but it is invisible to block the communication between people, is the thinning of human feelings. There is also the emergence of the network, is that some criminals have the opportunity to take advantage of, disturbing people's lives and so on a series of your so-called high-tech side effects brought about by the undeniable, ask us how can we sit back and do nothing?

Scientific development has made great progress in society, promoting the improvement of our standard of living, but it is we have overemphasized the development of the environment and neglected the problem. In the process of development, we are in pursuit of profit to the environment caused by the destruction has made our homes become miserable, the death of wild animals caused by his endangered and even extinction. Industrial emissions of waste water has caused water pollution, resulting in a large reduction in potable water.

Industrial emissions have caused atmospheric pollution, and the hole in the ozone has caused the glaciers at the North and South Poles to melt and the sea level to rise. This is all brought about by scientific development.

2. Scientific development has made us over-exploit the earth's energy, is the serious lack of non-renewable resources, the current era we are mining even decades or even hundreds of years of our children and grandchildren's resources, then wait until that time and then there is no new energy to provide the situation of what they have to use what can be the original life?

The development of science has brought the shadow of war, every country wants their own country is the most powerful, then they must develop those powerful scientific weapons for this purpose, these weapons research and development first of all need money, where the money comes from, of course, is that each of us civilians, then we have to bear the burden of this pressure, and the development of weapons but also experiments, where to experiment, some uninhabited areas, then the weapons experiments. Some uninhabited areas, then the experiments of the weapons have caused serious damage to that area, making that land unusable. And the radiation produced by it will remain for a long time, then the land will be completely deserted, which is a waste of money for our society.

4 country strong people will have ambition, ambition will be how, of course, is to start a war, although now the war to not many people, there are a few missiles on the line. But it is these few missiles can cause a country or a region's economy back decades, in this stage of development of the financial resources needed to have is how big the loss.

1:Environmental pollution. This is the most direct and most conspicuous bad.

2:Accelerated extinction of species. This is caused by environmental pollution and human killing. It is also the bad side of the development of technology.

3:The safety of human beings is becoming more and more insecure. Nowadays, there are tens of thousands of crimes occurring every day. Most of these crimes are related to the latest technology. Gun crime, in particular, has become a major concern for the general public. As we have seen in World War II, with the advancement of technology, wars now cause far more damage and loss than ever before. It may even lead to the end of the human race.

4: The physical quality of human beings is not as good as before. With the development of science and technology, gas cars, trains, airplanes and other modes of transportation to make the human daily life has undergone a major change, human beings are no longer always rely on their own two legs, and therefore the physical quality of human beings and the previous compared to the physical quality of human beings has been incomparable. In the past, Xiang Yu's "power to pull mountains and rivers to cover the Ruoxi" is no longer possible in today's society. And this situation continues to develop is likely to make the human limbs atrophy, so that human beings appear a new form.

5: A variety of emerging germs continue to appear, many of which have far exceeded the destructive power of the previous germs. This is due to the rapid development of medical technology has accelerated the mutation of viruses. So much so, that technology is no longer able to keep up with the speed of virus mutation. Perhaps one day the human race will be destroyed by a major plague.

1. Computers: Because of computers, there is the Internet and online games. So, teenagers can not help themselves, deserting their studies and doing nothing. Computer, television and caused our myopia. If there is no TV, computer we may not be myopic .

2. Cars: Cars, although its arrival has brought great convenience to people, at the same time it has also brought great losses to people. City car noise, exhaust pollution and car accidents have caused numerous deaths and injuries. People still want to invent cars that don't pollute the environment, but along with not polluting the environment comes the practice of wasting resources. The population is expanding, if each person has an automobile, is there still room for human beings to live? There is a person who wrote an article, he simulated the future, in which people rely solely on high technology but are lazy and get a lot of diseases, resulting in the death of human beings. Maybe some people will say, there is no high-tech, we are sick how to be good? Then let me tell you, every year more people die from car accidents than from sickness. The emission of automobile exhaust causes environmental pollution and seriously affects people's health.

3. Air conditioning: Like the industrial products we use, air conditioning is bound to put a certain burden on our environment. A few years ago, the impact of air conditioning on nature mainly focused on the discussion of the destruction of the ozone layer of the earth by refrigerants, but over the years, due to the development of refrigerant renewal trip, this is no longer the main factor. It reduces the ability of people to adapt to the natural environment and diminishes the immunity.

4. Nuclear energy technology (atomic bomb): the development of atomic physics theory is that mankind has mastered the nuclear energy technology, we all know that the nuclear disaster in Hiroshima and Nagasaki, Japan, that is to bring mankind fifty years of "horrible peace", mankind for the first time with their own destruction of their own ability. There are also numerous nuclear accidents, the Soviet Union's Chernobyl is the most famous, the development of chemistry makes us get the unprecedented ability to transform nature, but our gunpowder and explosives also hurt tens of millions of human compatriots.

5. The advent of television and other such entertainment has made human interaction less and less humane.

6:The physical fitness of human beings is not as good as it used to be. With the development of science and technology, gas cars, trains, airplanes and other means of transportation so that the human daily life has undergone a major change, human beings are no longer always rely on their own two legs, and thus the physical quality of human beings and the previous compared to the physical quality has been incomparable, a variety of emerging germs continue to appear, many of them have far more than the destructive power of the germs of the previous killing power. This is due to the rapid development of pharmaceutical technology has accelerated the mutation of viruses. So much so that the development of science and technology has been unable to keep up with the speed of virus mutation.

7. Harm to Nature: For nature, the development of science and technology is almost harmless. First of all, from human beings, human beings come to this world has been a great harm, because human beings are selfish, human beings destroy the natural ecological balance. Now human development of science and technology, although it brings convenience to human beings, but bring this convenience at the same time also produces harmful to human beings, but also to the nature has a great harm, resulting in the endangerment of precious animals; although the cloning technology can save those animals on the verge of extinction, but the animals on the verge of extinction, or human beings, or human science and technology. I think that cloning technology is just a way for human beings to make up for their mistakes.

When mankind crosses into the 21st century, how many amazing changes have taken place in the world. While people are happy about the rapid progress of science and technology, they have experienced more disasters, and wars and diseases seem to bring mankind directly to the gates of hell again.

Thanks to the cell phone will make the user's brain is often under the radiation, the human brain is very harmful. According to statistics, if a cell phone is used for more than one hour in a day, a person's instantaneous memory will drop by 30 percent.

SARS virus (SARS)

There was originally no such term before

Singapore to cut 2003 growth forecast due to SARS incident

2003-04-09 10:52

The Singaporean government is preparing to cut its growth forecast for 2003 due to severe The spread of Severe Acute Respiratory Syndrome (SARS) has reduced the number of tourists traveling to Singapore and hit sales in the country's shopping malls hard.

Singapore's Prime Minister Goh Chok Tong said the government is not yet in a position to confirm the full impact of the SARS virus on the country, but acknowledged that Singapore's official forecast of 2%-5% economic growth in 2003 will be affected. Goh Chok Tong said recently: "I can say right now that the economic growth rate this year will have to be adjusted downward."

The Severe Acute Respiratory Syndrome (SARS) virus has claimed the lives of eight people in Singapore and infected 106 others.

According to the Singapore Retailers' Association, shopping centers were unusually quiet over the weekend, although the extent of the impact of SARS varied according to the type of merchandise and location.

Private analysts revised their growth forecasts for this year downward by an average of about 1 percentage point, taking into account the double whammy of war and SARS on the industry. The average Reuters survey of 10 financial institutions expects growth of 2.7 percent this year from last year, compared with 3.8 percent in a January survey conducted before the Iraq war and SARS broke out.

White pollution" mainly refers to the environment caused by "visual pollution" and "potential harm" two negative

effects.

"Visual pollution" refers to the scattered in the city, people discarded plastic waste on the cityscape, landscape

destruction. For example, scattered on both sides of the railway, rivers and lakes in a large number of polystyrene foam plastic tableware and flying or hanging in the sky on the branches of the ultra-thin plastic bags, which bring people bad visual stimulation, the people reflect this strongly.

"Potential crisis" refers to the plastic waste into the natural environment and difficult to degrade the environmental problems brought about by the

The hazards mainly include the following:

Not easy to recycle because of recycling in the utilization of the high cost, but the utilization rate is low, the businessman can be said to be unprofitable, but also because of it! Recycling price is very low it is difficult to attract the general public to carry out "white recycling" work. Therefore, the phenomenon of not easy to recycle occurs.

Difficult to degrade. Recycling back to the white waste is not easy to deal with. At this stage, the main treatment methods are incineration and landfill, if it is incinerated, it will produce a large number of toxic fumes, pollution of the atmosphere, and promote the formation of acid rain, and as for the landfill, it will be buried for 100 years, it is still the original state, can not be absorbed by the nature and the land has a great harm to change its pH, affecting the crops to absorb nutrients and water, leading to agricultural production, as for the abandonment of the plastic products in the water or land, not only affecting the environment, but also to the land, the land, the land, the land, the land, the land, the land, the land, the land, the water, the water, the land, the land, the land. As for the plastic products discarded in the water or on the land, they not only affect the environment, but also lead to death if they are swallowed by the animals. This destroys the ecological balance.

High temperature decomposition of toxic substances, plastic products are non-toxic substances, but because of its recycling equipment is not perfect, poor technology, and many manufacturers do not have a legal business license, resulting in the reproduction of plastic products at a temperature of 65 ° C, the toxic substances will be precipitated and seeped into the food, then the liver, kidneys, reproductive system and central nervous system, and other important parts of the human body will be harmed. The result is harmful to the liver, kidneys, reproductive system and central nervous system and other important parts of the human body.

Experts have found that almost all plastic products contain large amounts of plasticizers, which are potentially harmful to the human body.

Last year, once triggered the supermarket cling film safety crisis "plasticizer" (plastic bags and plastic products contain a "phthalate esters" chemical composition, adding this chemical composition can increase the plasticity and flexibility of the plastic to improve the strength of plastic products), is now again Plastic products), now once again into people's lives. And this time the problem is in the people's three meals a day use of cooking oil plastic drums.

Not long ago, the Guangzhou Food Safety Information Network released news that a study by Tongji University confirmed that plasticizers in plastic buckets for cooking oil are harmful to humans. "Cooking oil in plastic buckets, cooking oil will dissolve into plasticizers that are harmful to humans." According to the news, the group of Prof. Shuguang Li of Tongji University's School of Basic Medical Sciences had collected plastic drums of soybean salad oil, blended oil and peanut oil of different brands and different factory dates on the market, as well as bulk soybean oil sold on the market. After measurement, it was found that almost all brands of cooking oil in plastic drums contained the plasticizer "dibutyl phthalate". It was deduced that the plasticizers detected in cooking oil mainly came from plastic containers. This plasticizer has a toxic effect on the human reproductive system, and is more toxic to men.

In the past, it has been considered that plasticizer-like compounds have low toxicity, good physical and chemical characteristics, and easy to produce and inexpensive, so almost unrestricted production and use. At present, China has become a plasticizer use of large countries, the annual production of more than 300,000 tons of plasticizers.

A comparative study conducted by Prof. Knight showed that the plasticizers detected in cooking oils mainly came from their plastic containers. Among the cooking oil samples collected by the research team, one brand of cooking oil samples in plastic drums was found to have the highest levels of plasticizers, at 2.98mg/L and 24.16mg/L respectively, which the researchers believe may be due to the high plasticizer content in the brand's plastic containers or contamination by plasticizers during production and processing.

The study also found that there was no significant correlation between the amount of phthalate plasticizers in the samples and the storage time. The migration rate of plasticizers into edible oils is influenced by many factors. In addition to the storage time, the migration rate is related to the storage temperature and the plastic packaging material? The content of plasticizer is related: the higher the storage temperature, the faster the migration rate; the higher the content of plasticizer in the plastic, the poorer the compatibility between the plasticizer used and the resin, and the larger the percentage of plasticizer that may be dissolved. The plasticizer content in the plastic packaging materials used for cooking oil in barrels from different manufacturers is different, and the storage temperature also varies with the environment. Therefore, without controlling other influencing factors, the plasticizer content in cooking oil does not show a clear trend of increasing with the extension of storage time. The very high levels of plasticizers in cooking oil residues accumulated on exhaust hoods in home kitchens suggest that a large amount of plasticizers may also be inhaled into the lungs along with the fumes during the cooking process.

The news also said that researchers found that the acute toxicity of plasticizers is very low, the human body ingested a short period of time almost no acute toxicity, but this does not mean that it is safe, on the contrary, its chronic toxicity on the human body is quite harmful. Foreign animal research results show that plasticizers can lead to reduced survival rate of animals, weight loss, decreased liver and kidney function, blood erythrocyte reduction, mutagenicity and carcinogenicity.

Experts, containing DOP (dioctyl phthalate) plasticizer PVC products in the field of human health care, life-related applications are also very wide, and it is difficult to use other materials to replace all. Such as latex gloves, plasma bags, part of the blood transfusion, infusion, respiratory appliances, as well as children's toys, artificial leather (used as clothing, footwear, handbags, sofa fabrics, etc.), PVC products account for a large proportion. Some developed countries have used plasticizers and other additives in these products have strict regulations or corresponding recommendations, while China's medical gloves, plasma bags, the main plasticizer is still DOP.

More worrying is that the current plasticizer pollution is almost ubiquitous, the chemical industry's most commonly used raw materials, with the passage of time will slowly overflow from the plastic products into the air, soil, water and even food. , water and even food. "The wide range of its use, the size of the contaminated area, the number of people affected, more than pesticides, DDT, etc. ever." Professor Li Shuguang pointed out that few people realize this yet. This is a very dangerous trend, if the national authorities do not give effective prevention and strong control, we will bear serious consequences for this phenomenon .

With the development and use of plasticizers, people are paying more attention to their safety. Governments have begun to realize the potential threat of plasticizers to human health, such as Denmark banned the use of phthalate plasticizers in the plastics of toys and nursery supplies for young children. Because most young children like to put toys into their mouths, so plasticizers will endanger children's health; Switzerland also banned the use of DOP in children's toys.

While the way to limit plasticizers varies from country to country, but basically follow two principles: first, limit the use of plasticizers in plastics; second, limit the maximum allowable amount of migration to food. The countries adopting the first principle are the United States, Germany, Britain, Japan and so on, and the Netherlands, Italy, Spain and other countries will use the above two principles in combination.

It is reported that China has also formulated health standards for the use of food containers, packaging materials with additives (GB9685-94), food containers, packaging materials with the use of additives of the varieties, the use of the scope and the maximum amount of use are stipulated, of which the maximum permissible amount of use of DBP (dibutyl phthalate) and DOP are 35% and 50%, respectively. The maximum permissible levels for DBP (dibutyl phthalate) and DOP are 35% and 50%, respectively, but the maximum permissible levels for food have not yet been established.

To this end, some experts suggest that China's food industry should vigorously promote the reduction of the use of plastic packaging containers, in particular, should be avoided with a variety of plastic products in direct contact with the food, to prevent the plasticizer on the contamination of food. At the same time, should increase investment in scientific research to carry out research on the toxicity of plasticizers, as well as human health with the relevant prospective epidemiological investigations, from the cellular, molecular, genetic and other levels of analysis and understanding of the toxicity of plasticizers in the field of polymers to develop and develop a better quality and safer alternative products, and research related to the intervention of preventive and curative measures.