I come from a family of engineers and I am married to a scientist in a family of doctors. When I began studying journalism and news many moons ago, all of them pointed out how bad they felt science news coverage is. One of the chief criticisms I often hear is that science news lacks context and depth. Reporters cover a study like it is the be-all and end-all, studies are covered only if they are easy to understand instead of if they have merit, science only gets covered if it is political, etc...
I think this Guardian blog post that outlines what a typical science news story contains sums up their criticisms quite nicely. The fact that such a piece can be written (and be so darn funny) points to the fact that journalists may want to take a second look at how they cover science.
Cook Library has lots of great books about science news coverage including:
ScholarlyCommons at Penn: Annenberg update
3 years ago