Gun research is allowed again. So what will we find out?

One of President Obama’s less-noticed actions on guns yesterday could actually prove to be one of the most significant in the long run. Among other things, the president signed an executive order directing the Centers on Disease Control to start studying “the causes of gun violence” once again.

Why does this matter? Because one of the major reasons that gun-policy disputes are often so contentious and interminable is that there’s remarkably little hard evidence to go on. And that ignorance is partly by design. [cont.]

Brad Plumer, Washington Post