If you haven't yet heard of the terms "data journalism" and "computer assisted reporting" (CAR)--describing the practice of using data to find and tell stories--then this O'Reilly Radar article from March 1, 2012 is a must read.
Tech writer Alex Howard quotes Sarah Cohen, the Knight professor of the practice of journalism and public policy at Duke University...
"I think we’re increasingly seeing that stories just as likely (if not more likely) come from the unstructured information that comes from documents, audio and video, tweets, other social media — from government and non-government sources. The other theme is that there is a lot more collaboration, openness and sharing among competing news organizations."
All I can say is that today's investigative journalism is very different from what I studied years ago.