Is Art Art?

There was a pianist who just sat behind a piano for 4minutes and 30 seconds and called it an art. Some people may say this can't be an art, but I thik this can be an art for 3 reasons: art is free from a form; silence can be an art; art is not for money.
First of all, art dosen't have to keep the form. If the art is a standardized form, there would be no need for an artist because every one can be an artist only if they learned what art is. The style and form totally depends on the artist and piaist is an artist. So if the piaist considered the performance as an art, it's an art.
Secondly, silence can be an art. As I mentioned before, art has no form and, in my opinion, if a person can feel something from it, it can be an art. Also sometimes silence can give a person inspiration and impression more than any other things. So if someone felt something during the performance, it can be an art.
lastly, some people won't pay for the pianist's performance. Then soon the pianist won't be able to earn any money. If the pianist worried about the finencial problem, he won't be able to perform the 4 minutes and 30 seconds. But art is not a money making and may be this is the reason the pianist performed although he knew that he won't get money from it.
Now to conclude, art can be whatever the artist think and want to show other people without considering the money the artist can get from it and silence can be something that the artist wanted to express. So I think the 4 minutes and 30 seconds as an art.

Chapter 11: Building Green

These days, many people start thinking about 'sustainable development' which is aim to protect the environment without inhibiting the needs of peolpe. For instance, the buildings around us are becoming greener and more economical. To let the sunshine in, builders make biger windows. the sun can not only offer heat and light but also enable solar cells to store electricity. Some green Buildings have an entire roof garden that keeps building cooler when it's summer and warm when it's winter. They also use the minimum amount of fresh water and reuse the water by storing rainwater. The materials used to build green buildings are also green. They use bamboo instead of trees and use recycled materials. Still,only a small amount of buildings are green buildings but surely the buildings around us will become greener in the near future.
I always try to protect the environment but I didn't knew that there are such a great building that not only help people but also good for the environment. I hope to see more green buildings being built in Korea.