Two kids test sushi in NYC. The result, 2 out of 4 restaurants and 6 out of 10 grocers are selling mislabeled fish (tilapia for white tuna, cod for snapper, etc).
They accomplished this by buying fish, sending it to a lab and looking at the results.
Following Brad's argument that the future of news is in databases, this is a novel, and probably indicative, glimpse into just how powerful that could be. In this case, two kids send in samples for a database cross reference and turn up a story that would earn any investigative reporter an award.