The final topic I choose is wind energy; about is it clean cheap and practical? As people know that wind energy is totally clean and just use wind to convert energy. I will figure out what is the advantage of wind energy and how to get the clean, environmental wind energy. However, people don't know how to gain wind energy; the process of converting is clean or not. Furthermore, what kind of machine like windmill can make wind energy, that’s also a question.

First, I will introduce the wind energy which has different types, and their different function. Using the official language in the google to describe it, also when and why wind energy comes out. Like talking about wind energy’s history. And I will tell the wind energy machine, how to make it and how long to make it. also, how much pollution it will have during the making time.

Then, I will say something about how wind energy developed and figure some celebrity in this area and their contributions. And what they didn't do and the difficult points for them and future wind energy.

The next step I will talk about the wind energy in worldwide, how it works and what range does it works, then specify to different countries, such as the U.S. and China. And the result and how wind energy works efficiently in those countries. For the detail of those information, I will use website or database in library.

At last, I suppose to say that the advantage and disadvantage of the wind energy. Also, compare what wind energy can give to the human and what it will cost from human.