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Appropriate technology refers to technology created in consideration of the cultural, political, and environmental aspects of a community.

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Pot-In-Pot Refrigerator
[1]-By whom and when it was invented.
It was made by Nigerian, Mohammed Bah Abba in 2011.
[2]-How it got started
Mohammed Bah Abba wanted to help people who lived in rural area with no electricity. Therefore, he invented this refrigerator to preserve food fresh for a long time without any electric power.

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Pot-In-Pot Refrigerator was made by putting small jars in a large jar and filling wet soils between the two jars. If you cover the jar with a cloth, the wet water evaporates and takes away the heat. These jars can store food for a long time. It can store food for up to 3 weeks.

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Life straws were made for people from Africa who were poor and couldn’t drink clean water because of dirty water.
A group called Vestergarde Fransen in Denmark has made life straws over a decade.
With life straws, we can filter out bacteria and dirty water. But it’s so expensive that many Africans couldn’t buy it.

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Life Straws have a three-level structure. The first level consists of a membrane filter, the second level is an iodine filter, and the third level consists of activated carbon. Life Straws go through a membrane filter (the first level), and an iodine filter that filters bacteria (the second level). Finally, the freshness is improved by sanitizing the odor using activated carbon(the third level).

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My opinion: The reason I think it is important 

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My opinion: The reason I think it is important 

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(20624 송서연)
I think appropriate technology is important. All countries are different from each other in terms of environment, economic, culture. So, it is important to use technology that suits each country in terms of these. For example, if an electric refrigerator had been given to the people in the rural era instead of Pot-In-Pot refrigerator, the people could not have used it because of their environment factor. However, because they were given the Pot-In-Pot Refrigerator, they could get fresh food easily. For this  reason, I think appropriate technology is important.

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My opinion: The reason I think it is important 

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My opinion: The reason I think it is important 

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(20619 김채은)
I think these inventions, like the Pot-in-pot refrigerator and life straws, are important. Due to social, cultural, and economic constraints, many people are not able to enjoy the many technologies that we enjoy. Appropriate technology helps these people to use it without paying a lot of money.

Of course, there are also appropriate techniques, such as the Life Straw, that have failed because they have to pay a lot of money. However, even if it is an appropriate technique that has failed, I think it helps people even a little.

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Life straws are too expensive for Africans to use, so I don't think life straws are good enough.