Large metropolitan areas suffer about two-thirds of all firearm homicides in the United States, with inner cities most affected, according to a new report from the U.S. Centers for Disease Control and Prevention. "The central cities really bear the burden of firearm homicides," said Linda L. Dahlberg, the associate director for science in CDC's Division of Violence Prevention, noting that the gun murder rate was highest among male children and teens. These findings "speak to the importance of addressing youth if we really want to do something about the gun violence problem," Dahlberg said. According to the CDC, 25,423 murders...