(Gizmodo) The military masterminds at DARPA have just changed everything you think you know about bullets. Meet the Extreme Accuracy Tasked Ordnance, or EXACTO, a .50 caliber bullet that maneuvers itself midair to stay locked on target. Here's footage of the first live test: it sure as hell looks like the technology works.
We can't find a detailed explanation of just how that bullet swerves itself back on-target. DARPA's public description is, perhaps not surprisingly, rather vague.