Across the U.S., 15 states allow school personnel to carry guns on campus, according to nonprofit Everytown for Gun Safety.

Deadly shootings at a signature New Orleans cultural event — a neighborhood “second-line” parade — left authorities pleading with witnesses to come forward with information or ...

A reporter and former infantryman in Afghanistan had let his AR-15, used for target shooting, collect dust. Then he began ...

Forensic science has deadly stakes, but half of the largest labs in the U.S. haven't adopted federal standards, including for ...