Featured in blades

Make a knife sharp enough to shave
From NACHOS to MAHEM: Naming The World’s Most Advanced Military Tech
Video: In Pioneering Study, German Robots Given the Chance to Stab Humans
Video: A Silent Rotor Blade Paves the Way for Super-Stealth Choppers
Stealth Wind Turbines Avoid Erasing Aircraft From Radar
DARPA Wants Morphing Helicopter Blades By Yesterday
The Fembot Mystique
The Supersonic Shape-Shifting Bomber