Key Points and Summary - That dramatic “smoke” around the F-22 isn’t a sci-fi cloaking device—it’s a vapor cone. -During high-G or near-transonic maneuvers in humid air, pressure drops cause moisture ...

Ukraine said it invented an "invisibility cloak" to help soldiers evade detection from thermal-imaging devices. One of the developers told Newsweek it was made with specialist units like snipers in ...

With favorable weather on their side, an army of firefighters made steady progress yesterday containing a raging fire that has scorched 14,000 acres in the Sierra Nevada. For the first time in days, ...