If you are finding too much information, your research topic may be too broad. Consider narrowing it to a more specific:
| Time | Civil War, Iron Age, 1920's, 18th Century |
| Location | Europe, U.S., Denver, urban, eastern |
| Population | age, race, gender, nationality, ethnic group, occupation |
| Event or Aspect | government regulations related to cloning, Battle of the Bulge in WWII |
| Person or Group | college students, Democrats, Republicans |
Broad Topic: Global warming
Narrower Topic: How will climate change impact sea levels and the coastal United States?