I say, this is science and technology, is the development of science and technology to promote the process of human beings, is the development of science and technology to make human beings have this new and beautiful life. Throughout the ages, which dynasty and which generation did not attach importance to the development of science and technology? Looking back, look at the four great inventions, unique; look at the astronomical calendar, marveled at; look at the Zhaozhou Arch Bridge, the design is exquisite; peep "Materia Medica", the Oriental canon; look at the value of pi, seven decimal; look at the Silk Road, the development of the economy; end of the blue and white porcelain, famous overseas. Scientific and technological development is the road to a strong country, scientific and technological development is the first driving force for the progress of the Chinese nation, no science, where we are today's happy life? Without science and technology, where we have a comfortable material life and spiritual enjoyment? Without the progress of science and technology, how can we eat the hybrid two? How can we wear cotton clothes, how can we live in high-rise buildings?
Ask, the development of science and technology benefits or disadvantages? There is no doubt, of course, is the benefit! What is the explanation? There is no need to explain! Chinese civilization eight thousand years of history and civilization is ironclad, history is changing every moment, technology is developing every moment. Human beings have learned to utilize or cook food from the primitive life of drinking blood and hair, from relying on nature to breeding and raising, from unarmed iron to metallurgy and stone smelting, isn't this all progress, isn't this all development? If the disadvantages outweigh the advantages, then why do human beings still coincidentally choose progress? Only progress can make tomorrow better!
A person who does not make progress is pathetic, a country that does not make progress is downtrodden, a world that does not make progress is dark. Only in continuous progress can human life be sublimated. Man is small, man is fragile, he does not have a huge body, no ox-like strength, no turtle's hard shell. But God gave mankind a smart brain, a pair of hard-working hands, mankind did not sit back and enjoy the success, but chose to continue to progress, can only stand in the top of the food chain today.
Let's compare today's life with that of 100,000 years ago, we are supreme; compare today with that of thousands of years ago, we are condescending; compare today with that of hundreds of years ago, we are happy and comfortable; compare today with that of tomorrow, the future is bright and beautiful. Thousands of years, from the horse-drawn carriage into cars, trains, airplanes; from kerosene lamps into incandescent lamps, neon lamps, energy-saving lamps; from the ends of the earth into the near at hand, video chatting, a little bit of the mouse to know the world.
We are happy, we are lucky, we caught up with a high-speed development of science and technology, an era full of high-tech, it is not only our ancestors in the evolution of the choice of development, choice of progress, but also includes all the unremitting efforts, hard work, how many of us today's day when the hard-working scientists with the wisdom of the even life in exchange.
Because of Faraday, we live around the full of a variety of electrical appliances; because Darwin, because Mendel, we can better understand themselves, cognizant of their own; because of magpies, because of Hua Tuo, because Li Shizhen, our lives can be guaranteed.
Aren't they the ones who gave us everything around us in exchange? Life is so comfortable, life is so cozy, life is so wonderful, our average life expectancy is 30 years higher than in ancient times, we don't even have to leave our homes to visit our friends and relatives, isn't it all because of the benefits brought to us by the development of science and technology?
So, science and technology change history, we explore the development of science and technology benefits or disadvantages is no need to question, because it is the benefits! Lei big! The benefits are great!
Technology changes history, knowledge changes destiny. We have entered the 21st century, into an era full of high-tech. Science has changed our lives, science has changed our destiny. "Knowledge is power", our Chinese people **** and the country, the great country of 1.3 billion people, why can we stand up in front of the world? Because our technology is constantly developing! Our science and technology in constant progress!
The benefits of technological development outweigh the disadvantages, which is an unchanging theme.
Humanity into the 21st century, the world has undergone a number of amazing changes. In the people for the rapid development of science and technology to rejoice, but also experienced better uneasiness 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 2003 SARS epidemic, including all the speculation about SARS, is directly linked to a growing global concern: biosafety. Biosafety is a scientific and technological system of detection, evaluation, monitoring, prevention and management of biological hazards, is the study of various biological factors on human health, the application of existing theoretical knowledge, technology, engineering design and equipment, etc., to prevent personnel engaged in related work, laboratories and the environment from being potentially infectious substances and biotoxic substances of the hazards of an emerging fringe discipline. Biosecurity issues are manifested in at least the following aspects:
The great danger of infectious diseases
Infectious diseases, including human, animal and plant infectious diseases, especially human infectious diseases is the most important biosafety issues, infectious diseases are still the first cause of death in the world, in our country, infectious diseases are still a serious threat to the health of the people and national security. the SARS epidemic is a strong proof of this The SARS epidemic is a strong proof. In addition hepatitis, tuberculosis, influenza and other infectious diseases are still prevalent or outbreaks every year in some parts of the country and some countries and regions of the world
Potential Threats of Biological Weapons and Biological Terrorism
The entire international community has made unremitting efforts to prohibit biological weapons in the twentieth century, and some progress has been made. However, in the 21st century, the potential threat of biological weapons has greatly increased, and some countries and regions may still continue to research and develop biological weapons. In addition, the rapid development of biotechnology has greatly increased the potential threat of biological weapons, and bioterrorism, symbolized by the U.S. anthrax incident, has posed a real threat to international security. Bioterrorism, symbolized by the anthrax incident in the United States, has posed a real threat to international security. Yuen Kwok-yung, head of the Department of Microbiology at the University of Hong Kong, was the first scholar to isolate a coronavirus and to discover that a variant of the coronavirus was the pathogen of SARS, an RNA virus that can easily recombine with other viral genes to become a new virus. Many experiments have shown that new viruses produced in this way are more virulent than their parent viruses. Coronaviruses can be found in many animals, and they can easily mutate, making them extremely dangerous. Yuan therefore believes that the SARS virus has great potential to become a pathogen for making biochemical weapons in addition to smallpox.
Negative effects of biotechnology
The negative effects of biotechnology are mainly manifested in the following ways: First, when people develop and utilize biotechnology, unexpected safety problems may arise. As the current widespread concern about the various types of genetically modified organisms living environment after the release of the harm posed to biodiversity. In addition, genetically engineered drugs and vaccines, genetically modified foods, gene therapy, and so on, may have similar problems. Misuse of biotechnology and unethical application of biotechnology may also pose significant safety risks. The research on somatic cell cloning of human beings is a prominent example.
Threats to Biological Resources and Biodiversity
From the perspective of biosecurity, the invasion of foreign species and the loss of biological resources may cause great damage to national interests. The environmental release of genetically modified organisms poses a great threat to biodiversity.
Safety hazards in microbiology laboratories
Compared with other physical and chemical laboratories or other kinds of laboratories, microbiology and biomedical laboratories are special laboratories in which everyone working in them, as well as the surroundings they come into contact with, have a high risk of suffering from infectious diseases or affecting their health. Negligence and accidents in the management of microbiological laboratories can lead not only to infections among laboratory workers, but also to environmental contamination and large-scale population infections. Accidents of accidental infection in laboratories at home and abroad are not uncommon, and in serious cases, thousands of laboratory animals have to be slaughtered, even leading to the death of laboratory staff.
At present, with the rapid development of biotechnology, biosafety has become a major proposition that affects the whole country and the whole world in terms of politics, economy, security and peace. In recent years, especially after the anthrax infection in the U.S., biosafety has attracted much attention both at home and abroad, and biosafety terminology is often found in governmental or nongovernmental organizations' documents and all kinds of media, and the global pandemic of SARS will undoubtedly make countries all over the world pay more attention to biosafety and take it as a component of national security. component of national security.
With the development of the economy, the accelerated pace of people's lives and the improvement of living standards, the amount of plastic
is increasing day by day. 1996, China's use of plastic packaging amounted to 2.43 million tons, with an average annual growth rate of more than
20%, especially in the city, along the main transportation routes, the rapid increase of plastic waste in the garbage in tourist attractions.
According to the survey, the annual output of domestic garbage in Beijing has reached 3 million tons, of which waste plastics account for about 3%, with an annual growth rate of
48%. Coastal cities in the garbage in the plastic component is higher, up to 8-10%. These waste
Plastic in the proportion of garbage if calculated by volume, has reached more than one-third, and greatly increased
The difficulty and cost of waste disposal.
Because waste plastic is difficult to degrade for hundreds of years, if discarded in the natural environment, mosquitoes, flies and
bacteria to provide a breeding ground for survival; if buried in the ground, it is easy to pollute the groundwater, impede the growth of plant roots
Systems, destroying the quality of the soil, affecting the crop yield; if incineration by fire, will produce a variety of toxic gases
Body. "White pollution" has become a major environmental hazard in our society, seriously hampering the sustainable development of our country's
economy and environment.
So, the development of science is a big advantage or disadvantage, we do not know, although the development of science and technology has brought us the convenience of joy, but at the same time to us caused a disaster! This is undeniable!