Meleanie Hain of Lebanon used to tell the news media that she carried a Glock 26 pistol everywhere she went to protect herself and her children. Then last week she was shot to death by her husband in what police called a murder-suicide. For years, researchers have been trying to investigate whether carrying a gun is protective or risky. But getting the answer through science has proved elusive. Now, University of Pennsylvania researcher Charles Branas has tried a new... (GunPolicy.org)