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¡¡¡¡I have got a lot of interesting scientific knowledge from the books of National Geographic Reading Expeditions£¬ some of which are about life£¬ physics¡£ I really can¡¯t help losing myself in the colorful pictures and clear words in the books¡£ After reading the books£¬ I have been considering a question: What if we lived without science? Great changes have taken place in the world with the help of science¡£ In the past£¬ life was nasty£¬ brutish and short¡£ It is hard to imagine how our forefathers could do without so many conveniences that modern science brings about¡£ Back then£¬ only a small group of people enjoyed the very few comforts¡£ But the majority of people didn¡¯t even have sufficient food£¬ let along their privilege to be educated¡£ Anyway£¬ it is science that changes the world and makes people¡¯s life better and better£¬ although it also leads to some bad aspects at the same time¡£

¡¡¡¡From the discovery of the gravity to the first step on the moon£¬ we human beings have experienced a long process of developing science¡£ And now£¬ this process is still continuing much faster¡£ New organisms are already being engineered£¬ and new genetically modified crops promise benefits from higher yields and less use of harmful chemicals and so on¡£ A lot of examples are showing this point¡£ In the future£¬ changes are likely to be even much greater as science reaches out to shape life itself¡£ Maybe one day£¬ the possibility that life existed on Mars billions of years ago will be potentially one of the greatest discoveries of our time¡£ It is the force of the competition£¬ we human beings¡¯ inquiring mind and initiative that bring about the non-stopped development of science¡£ Therefore£¬ it is difficult and impossible to prevent science from changing the world and our life as well¡£
¡¡¡¡At present£¬ we are in two minds about science¡£ On the one hand£¬ we are enjoying the sweet life as a result of the evelopment of science£¬ and expect it to continue¡£ And we are showing our interests into some scientific expeditions£¬ such as the astronomy£¬ the alien civilization£¬ etc¡£ On the other hand£¬ we are distrustful of it£¬ due to the lack of understanding of science¡£ Some people thus far are still very superstitious£¬ and they would even believe in superstitions rather than believe in science¡£
¡¡¡¡Stephen Hawking£¬ one of the most remarkable scientists in the world£¬ once said£¬ ¡°In a democratic society£¬ the public needs to have a basic understanding of the science£¬ so that it can make informed decisions and not leave them in the hands of experts¡£¡± This has reminded me of Professor Alan G¡£ MacDiarmid from America£¬ the person who got the Nobel Prize for chemistry in the year of XX¡£ In his lecture at Peking University this year£¬ he put forward that science is people¡£ He also expounded the importance of the basic science for the public¡£ Evidently£¬ every one of us does need science£¬ or we can¡¯t live without it¡£
¡¡¡¡Now that everyone needs science£¬ why not take advantage of some means to give the public the right basic scientific knowledge? So when they face the problems such as acid rain£¬ the greenhouse effect£¬ nuclear weapons£¬ environment destruction and some other problems£¬ they can also make informed decisions on these subjects£¬ just as what Hawking said¡£ One aspect relies on what is taught in schools¡£ But science is often taught in an uninteresting way and most students just learn it by rote to pass examinations¡£ However£¬ the final goal of learning science is not to pass examinations or to get a higher score; instead£¬ we should try to make full use of it to change our world and life¡£ While learning£¬ we should try to ask more questions and we should have the courage of suspecting the knowledge in the books£¬ as some of the scientific conclusions are likely to be corrected in the future¡£ Who knows¡£ So not only must we change our attitude towards science£¬ but also the way of teaching and learning science¡£
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