-South Korea’s K3 concept is a hydrogen-powered “stealth tank” that tries to solve the drone-and-sensor battlefield problem by shrinking its signatures. -Developed by Hyundai Rotem and ADD to replace ...

H. G. Wells's "The Invisible Man" brought the idea of invisibility to the mainstream over a century ago. Not long after, the fascination with invisibility became a hot trope in fantasy and sci-fi ...