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: