Unit 9 : Should there be one world language that everyone speaks?

When we travel abroad that has a language we have never learned about, how can we communicate in that country?
When we meet foriegners how can we speak each other?
All of us know the awnser. We can use English and we can understand what they want to say or we can tell them what we want to say. The representative language can make us communicate if we had totally different languages. But this doesn't mean that there should be one world lanuguage.

The language is not only a language but also a window of its own culture. It contains a native culture and other languge cannot show that. The extinction of languge means also the extionction of the culture. It is not an overstatement.
All over the world, there are uncountable races, tribals, societies, etc. Then how can we unite the lanuage? Is it possible? Is there any government which has forciblness?
In conclusion there is no realistic.

For preservation of humanity values, we have to respect  the variety languages. The official language is what we need. Not "an languge."

Unit 8 : Stem cell

Have you ever heard about stemcell?
You may heard alot about this in cosmetics. But I am going to talk about medical part.
In 2004, Korean doctor Wooseok-Hwang cloned somatic cells by using human egg as a first in the world. And from these , he also made embryonic stem cells. This was issued by 《Science》.
His success came into its own as opening road of treatment incurable disease. By the other side this provoked ehics matter like human cloning.

Different from other transplant technologies , stem cell is easy to extract. It can be get from skin ans then divided into liver, kidney or muscle. Embryonic stemcell can be extracted by transplanting somatic cell.
In placenta, cut after childbirth, also stem cell exists in it. When children get disease, children can be cured by this stemcell. Because of this, stem cell bank and placental blood storage industry appears in Korea.

Also stem cell has stability to use. There is no immune rejection response. Because it is from its own body. Nowadays cartilage stemcell is used to cure degenerative arthritics. And bone narrow stem cell is generally used to cure lukemia.
Adults' bodies also have dividable cell. From this we can avoid moral problems partially. This treatment is way to substitute damaged organs. Even it had unlimited possiblities theoretically.

Besides, above strength of stemcell, few things we have to check before use it. There are not only technological problems but also needs of verification about effect and safety.
It is overall in first step.
But the growth of technology is so fast that it will be soon ready to use.