NARROWING /broadening A TOPIC
Suggestions

 
1.  Use Clusty: A Search Engine that breaks topics into clusters and also by type of website, i.e. edu .org. etc.
     Clusty is a great starting point for finding and narrowing a topic.
2.  Do subject searches in reference databases and Destiny.
3.  Narrow or broaden your topic to fit the assignment.  See chart below.

   
3.  If your topic is "Cloning", it is much too broad.  See samples of how to break a topic down below.
Topic: Cloning
Components/Subtopics History of cloning, human cloning, animal cloning, economics of cloning, human embryo cloning, plant cloning, ethics of cloning.
What is your area of interest? Reproductive cloning.
Questions about your topic. Should human embryonic stem cell research be considered
immoral?  
Should stem cells  be harvested from artificially grown fetuses? 
Topic Sentence I will explore human embryonic  stem cell research as immoral based on the fact that embryos are human.
   

4.  Another way to narrow a topic is by asking the following questions: 

Where? United States, New York City, England, etc.
When? Now, Early 20th century, Victorian Period, etc
Who? Socialists, Immigrants, Women, Catholics
Related Events Civil War, McCarthyism
Type Newspapers, Television, Movies, Comics, etc.