Many news sites display related content at the end of an article that’s often based on textual analysis or visitor traffic. Articles often assume a baseline of knowledge on a story, regardless of whether the visitor knows anything about the topic or not.
It would be neat if you could include a quiz widget within the article. The reader could take the quiz which would test their knowledge and then suggest content based on their responses. The news organization would collect useful demographic data to refine their editorial planning.