The 21st century has begun. What changes do you think this new century will bring？
When people talk about the changes of the 21st century，their views certainly differ from that inventions have not only greatly improved our live but change the way we live to that the globalization creates some effect sides. Both sides of the questions are well supported by some reasons.
Those people who strongly believe that the science and technologies emerge have cogent reasons for it. First and foremost，advances will continue to be made in the field of medicine that will allow people to live longer and healthier lives on the grounds that in developed countries today most people already have a lifespan that would have been unusually long a hundred years ago . In other words，steady progress is made in the eradication of disease and this should continue in the next 100 years as biotechnology in the field of genetics may someday allow us to develop bodies that are stronger and free of inherited defects . Besides，new technology brings people around the world closer because communication becomes more efficient. When countries and their people form stronger bonds both economically and politically，it has been like the development of European Union in resent years. This means that some day in the future there will cease to be national boundaries.
However，views on this issue vary from person to person. Some people assert that one side effect of this globalization is that many characteristics of individual cultures will be lost and we can expect a growing population and demands for a higher standard of living to put increasing pressure on the earth’s resources. To begin with，some languages and art forms may only be found in museums by the end of century in that people ignore the protection of cultural heritage. Given that people have the demand for a higher standard of living，and given that this progress seems to be accelerating，we have already seen some side effects of this in forms of science and technologies. Furthermore，the radiation is bad for human beings，for numerous rays destroying all kinds cells result in the disorder of immunologic system. Provided that increasing radio wave is sent in the sky，human beings will suffer from much danger. This may be the reason why high technologies must cultivate a great amount of harm for human being.
In conclusion，we will find more efficient methods to make use of the available resources of develop alternative forms of energy，which can make use live in better harmony with nature. Although there may be problems in the future，our ingenuity and inventiveness will help us to deal with them. Only in the right way can we make it better sooner or later.