Pick a topic that interests you, but make sure it's workable too. You want something that is broad and current enough that other writers and scholars are talking about it, yet focused enough that you can cover the topic thoroughly within the limits of the assignment.
Here are some resources that might be helpful to choose a topic. Both of these resources are library databases. You can access them off-campus with your Access ID and password.
You may also wish to search Google News, which has current events and other stories on a variety of areas including business, science, technology.