http://www.kqed.org/.stream/anon/radio/quest/2009/10/2009-10-05-quest.mp3
Last month, the FBI released a report showing violent crime has dropped for the second year in a row... down nearly two percent in 2008, from a year earlier. Still, many homicide cases go unsolved. A new technology called "bullet microstamping'' aims to help change that. But will it work?