The list of research project topics Dr. Walsh gave you provides great keywords, as do the assigned readings for the course. Here's a link to the research projects topics list:
Encyclopedias can supply a good overview of a topic. These overviews will include keywords that can help you develop a search. To find encyclopediat articles, search PrimoDiscovery and use the left-hand sidebar to limit to Reference Entries.
Newspapers contain good overviews of current events, including terminology that can be used as keywords. The TLU Library has several newspaper databases. Try starting with:
When you know the name of the publication you want, like The New York Times or The National Review, use the Publications by Title link and search for the publication name.