Disadvantages of scientific development: 1. Although scientific development has made great progress in society and promoted the improvement of our living standards, it is precisely because we overemphasize development that we ignore environmental problems. In the process of development, the damage to the environment caused by our pursuit of interests makes our home miserable, and the death of wild animals makes it endangered or even extinct. Industrial wastewater has caused water pollution, resulting in a large reduction of drinking water. Industrial waste gas has caused air pollution, and ozone hole has caused glaciers in the North and South poles to melt and sea level to rise. This is all brought about by scientific development. 2. Scientific development makes us overexploit the earth's energy, but those non-renewable resources are seriously lacking. At present, we are even exploiting the resources of our descendants for decades or even hundreds of years. So when there is no new energy to provide at that time, what will they live with? The development of science has brought the shadow of war. Every country wants its own country to be the strongest, so they must develop those powerful scientific weapons for this purpose. The development of these weapons needs money first. where is the money to come from? Of course, we have to bear this pressure, and the development of weapons still needs experiments. In some uninhabited areas, weapons tests have caused serious damage to the area, making it unusable. And the radiation it produces remains for a long time, then this land will be completely abandoned, which is a great waste to our society now. When the country is strong, people will have ambitions. What will happen if they have ambitions? Of course they will wage war, although not many people are participating in the war now, just a few missiles. But it is these missiles that can set the economy of a country or a region back for decades, and how much financial resources are needed to develop to this stage. 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 is at least manifested in the following aspects: the great harm of infectious diseases, including human, animal and plant infectious diseases, especially human infectious diseases, is the most important biosafety issue, and infectious diseases are still the first 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 China and some countries and regions in the world every year, or the potential threat of biological weapons and bioterrorism breaks out. 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 negative effects of biotechnology are mainly as follows: First, unexpected security problems may occur when people develop and use biotechnology. Just as the environmental release of various genetically modified organisms is widely concerned about the harm to biodiversity. In addition, genetically engineered drugs, vaccines, genetically modified foods, gene therapy, etc. There may be similar problems. The misuse and unethical application of biotechnology may also bring great security risks. The study of somatic cell cloning is a prominent example. Threats to biological resources and biodiversity.