The World's First Powered Submarine Arrived 60 Years Before Its Time

The Axis war effort throughout the first half of the 1940s led to some incredible advances in submarine technology. That includes the anaerobic Walter turbine—a newfangled engine that didn't need oxygen to work. Even more incredible, these discoveries were not entirely new, but in fact more than 60 years old—the… » 9/18/14 11:40am 9/18/14 11:40am