TAILIEUCHUNG - Societ english4

Tham khảo tài liệu 'societ english4', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | PERSONAL AND SOCIAL PERSPECTIVES IN SCIENCE War Along with advances in technology came a different kind of warfare mass destruction and complete disregard for the environment. To end World War II and test a new weapon the United States dropped two atomic bombs on Japan instantly ending countless lives. Chemical and biological weapons and cluster bombs containing depleted uranium present another danger. All these weapons affect not only the humans involved in wars now but future generations and plant and animal life. Solar Power Solar power refers to the conversion of solar energy to another more useful form. Sunlight can be harnessed and collected in special greenhouses. Photosensitive cells can produce electricity when sunlight hits them. The sun produces about ten times the energy fossil fuels create each year. Many scientists are convinced that this form of energy will one day replace ordinary fossil fuels. Currently one reason that we still do not see solar-powered cars and houses is because fossil fuels are cheaper to collect and use. But technology is slowly catching up solar plants are now being constructed in some parts of the United States. Scientists are hopeful that these new plants will be able to produce enough energy to power our cities in the future. Genetic Engineering One of the fastest growing fields in science and also possibly the most controversial genetic engineering has been making headline news. The first thing that comes to mind is cloning. But there is more to genetic engineering than that. Genetic engineering is used to produce everyday products such as fruits grains plants and even animals like fish. This might be a bit pointless you might say. Certainly we have had fruits plants and animals before. Why do we have to genetically engineer these products We do not make these products from scratch. Genetic engineering allows us to modify the product to bring out certain qualities or to embed qualities that the product would not normally .

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