If every state in the U.S. had mandatory background checks for gun and ammunition purchases and required traceable bullets, firearms-related deaths might plunge by more than 80 percent, a new study projects. More than 31,600 people died by guns in the U.S. in 2010, a rate of 10.1 deaths for each 100,000 residents. Hawaii had the lowest death rate – 3.21 for each 100,000 people – while Alaska had the highest – 20.3 for every 100,000 residents. Laws that require... (GunPolicy.org)