Here is a very inspiring video. It is a talk given by a young man, named William Kamkwamba.
He is from Malawi, Africa. It is a very poor country. They experienced a very bad famine and there was no food. People were starving.
William could not go to school because he was poor. He went to the library and read books. In one book, he saw a picture of a windmill. It said he could get electricity and pump water with the power of the windmill.
So, he learned how to make his own windmill. He used parts he found - old bicycle parts, and other garbage.
People thought he was crazy, but he persisted.
He was successful and he built a windmill. His family had electricity in their home.
He became famous.
This is his story.