plastic explosives

(Newser) - NYPD officers are trying to determine who left a sack of military-grade explosives buried near a 19th-century vault in a city cemetery. The bag, containing 10 pounds of C4 explosive, was found more than a year ago by a caretaker ... who left it sitting by a fence; a volunteer touring...

(Newser) - In the wake of last week's attempted attack on a Detroit-bound flight, security companies say they're working on new body-scanning machines that search out threats like plastic explosives in an instant and could replace airport metal detectors. Similar scanners are used today at 19 US airports, but they take a...