Newspapers can subscribe to wire services. Some news outlets subscribe to international news wires such as the Associated Press and United Press International to add content to their publication; these pieces can be edited for a local market. Other wires collect state and government information, business press releases (PR Newswire and Business Wire), and even college press (Uwire). Be aware that public relations professionals will be pitching you company news in hopes you'll cover their product.
If the story is ongoing, set up news alerts to receive emails on new stories being filed.
If you're publishing local news you'll become an expert at tracking local government meetings.
What was already written? Read over secondary resources.
Looking for a particular newspaper, magazine or broadcaster? Search the Journals page (found in the footer of the library's homepage).
Check magazine and trade publications for coverage as well. Most businesses are part of a trade association. Trade Associations often generate magazines to their members to keep them abreast of current events.
Take a look at the list of Past winners & finalists for the Pulitzer Prize. There are many categories such as: Explanatory Journalism, Investigative Reporting, National Reporting, Breaking News, Public Service, Local, etc.