DefenseThis bullet makes 3D printed guns genuinely dangerous weapons (but don't panic just yet) A machinist from Pennsylvania has created a steel-reinforced bullet that can make firing unlimited rounds from a 3D printed gun possible.by Nicole Arce
DefenseNew U.S. Navy toys: Robotic boats that can easily swarm enemies, protect fleetby Menchie Mendoza
DefenseMIT’s pressurized ‘BioSuit’ ensures astronauts are comfortable in their second skinby Jim Algar
DefenseI can be brown, I can be blue…cephalopod-inspired material changes color with a remoteby Rebecca Kaplan
DefenseChinese researchers working on a flying submarine: Shanghai to San Francisco in 100 minutesby Vamien McKalin
DefenseChinese supersonic submarine with speed up to 3600 mph a step closer to realityby Lori Sandoval