How many amazing changes have taken place in the world since mankind entered 2 1 century. While people are delighted with the rapid development of science and technology, they have also experienced better anxiety and even disasters. In addition to the panic caused by the development of high technology, especially biotechnology, war and disease seem to directly bring mankind to the door of hell.
The epidemic of SARS in 2003, including all the speculations about SARS, is directly related to the global problem that people are paying more and more attention to: biological safety. Biosafety is a scientific and technological system for detecting, evaluating, monitoring, preventing and treating biological hazards. It is a new frontier discipline that studies the influence of various biological factors on human health, and applies existing theoretical knowledge, technology, engineering design and equipment to prevent people, laboratories and the environment engaged in related work from being harmed by potentially infectious substances and biotoxic substances. Biosafety problems are at least manifested in the following aspects:
The great harm of infectious diseases
Infectious diseases, including human, animal and plant infectious diseases, especially human infectious diseases, are the most important biosafety issues. Infectious diseases are still the leading cause of death in the world. In China, infectious diseases still pose a serious threat to people's health and national security. The prevalence of SARS is a strong proof. In addition, infectious diseases such as hepatitis, tuberculosis and influenza are still prevalent in some parts of the country and some countries and regions in the world every year.
Potential threats of biological weapons and bioterrorism
In the 20th century, the whole international community made unremitting efforts to ban biological weapons and made some progress. However, in the 2nd/kloc-0th century, the potential threat of biological weapons has greatly increased, and some countries and regions may continue to develop biological weapons. In addition, the rapid development of biotechnology has greatly increased the potential threat of biological weapons, and bioterrorism marked by the "anthrax incident" in the United States poses a real threat to international security. Yuan, head of the Department of Microbiology at the University of Hong Kong, was the first scholar to isolate coronavirus, and found that coronavirus variant was the pathogen of SARS. SARS virus belongs to RNA virus, which is easy to recombine with other virus genes and become a new virus. Moreover, many experimental results also show that the new virus produced in this way will be more toxic than the parent virus. Coronavirus can be found in many animals. This virus is easy to mutate and extremely dangerous. Therefore, Yuan believes that SARS virus has great potential to become the pathogen for manufacturing chemical and biological weapons other than smallpox.
The development of science and technology has brought convenience to people's lives.
Such as mobile phones, computers, etc. There are many good ideas that can facilitate people to transmit information, so I won't give them one by one.
However, while the development of science and technology brings convenience, the waste water, waste gas and waste residue produced by factories are also destroying the environment.
There is also white pollution-plastics will not decompose in soil for thousands of years.
Due to environmental pollution, chemicals have been found in penguins at the poles of the earth.
1 environmental pollution. This is the most direct and obvious disadvantage.
2. Species extinction is accelerating. This is caused by environmental pollution and human hunting. It also belongs to the disadvantages of scientific and technological development.
3. Personal safety is increasingly insecure. Now tens of thousands of crimes occur on average every day. Most of their criminal methods are related to the current new technology. Especially gun-related crimes, ordinary people can't prevent them. From the Second World War, we can already see that with the development of science and technology, the damage and losses caused by the current war are far from comparable. It may even lead to the fate of human extinction.
Human's physical quality is not as good as before. With the development of science and technology, the emergence of vehicles such as air cars, trains and planes has greatly changed human daily life. Human beings are no longer always dependent on their own legs, so the physical quality of human beings is not comparable to that in the past. In today's society, it is impossible for Xiang Yu to "pull out mountains and rivers". If this situation continues to develop, it may make people's limbs atrophy and make people appear.
5. All kinds of emerging germs appear constantly, and the lethality of many germs has far exceeded the destructive power of previous germs. This is because the rapid development of medical science and technology has accelerated the mutation of virus, so that the development speed of science and technology can not keep up with the mutation speed of virus. Maybe one day mankind will perish because of a great plague.
In favor: Science and technology are weapons for human beings to overcome and transform nature, and are an important force to promote the development of social productive forces. Every development of science and technology is a leap in the history of human civilization and an epoch-making victory for human beings to conquer nature and self. In the early days of primitive society and slave society, it was precisely because of the casting of bronzes and the use of ironware that social wealth doubled and caused changes in social form. In the industrial revolution in the18th century, it was precisely because of the wide application of steam engine technology that the industrial revolution entered a new stage, thus doubling the wealth of the capitalist world. After the Second World War, it was precisely because of the influence of the third scientific and technological revolution, which mainly focused on electrical appliances, that it greatly promoted the economic recovery of post-war capitalist countries and the substantial economic growth of socialist countries, and promoted the rapid increase of social wealth and the fundamental improvement of people's lives. So the advantages of scientific and technological development are obvious.
Disadvantages: 1: Environmental pollution. This is the most direct and obvious disadvantage. 2. The extinction of species is accelerating. This is caused by environmental pollution and human hunting. It is also a disadvantage of scientific and technological development. 3. Personal safety is increasingly insecure. There are now tens of thousands of crimes on average every day. Most of its criminal means are related to the current new technology. Especially gun-related crimes, ordinary people are even more difficult to guard against. From the Second World War, we can already see that with the development of science and technology, the damage and losses caused by the current war are far from comparable. It may even lead to the fate of human extinction. Human's physical quality is not as good as before. With the development of science and technology, the appearance of vehicles such as air cars, trains and planes has greatly changed human daily life, and human beings no longer always rely on their own legs. Therefore, the physical quality of human beings cannot be compared with the past. In today's society, it is impossible for Xiang Yu to "pull out mountains and rivers". However, if this situation continues to develop, it may make people's limbs atrophy and make people appear new forms. 5. All kinds of emerging germs appear constantly, and the lethality of many germs has far exceeded the destructive power of previous germs. This is because the rapid development of medical science and technology has accelerated the mutation of the virus, so that the development speed of science and technology has reached.