DARPA's Next Sub Hunter Won't Need Us Puny Humans

The US Navy has a bit of a sub problem. While the American fleet has contracted over the past two decades, numerous nations that aren't exactly our BFFs have expanded, with new, ultra-quiet diesel-electric subs. This proliferation has grown into a national security threat, but DARPA may soon have a solution—robotic… » 8/23/12 11:30am 8/23/12 11:30am