The U.S. Supreme Court considered arguments Wednesday on the constitutionality of the death penalty for juveniles. A reporter discusses the high court's debate over executing juvenile criminals.

New research on physical and developmental differences between the brains of adolescents and adults may explain why some teenagers behave erratically. The findings could have a major impact on U.S. court cases, especially those that deal with minors and the…

A 10-year-old law banning 19 types of semiautomatic weapons expired today. Jim Lehrer gets two perspectives in the debate over the need for the law from Seattle police Chief Gil Kerlikowske and Wayne LaPierre, CEO and executive vice president of…

The federal assault-weapons ban, which outlaws 19 types of semiautomatic weapons, is set to expire Monday if Congress does not renew it. Margaret Warner gets two perspectives on whether Congress should renew the ban from Sen. Dianne Feinstein, D-Calif. and…