Supersonic Submarines

Daktaklakpak writes "Not really new stuff, but it's too cool to pass up. Researchers are developing a method called supercavitation which may one day allow submarines to break the sound barrier. It works by placing the entire vessel in a gas bubble except for the tip, thus reducing the total drag." We've run an article about this before, but this is a bit more informative, with a lot of speculation about possible uses... Update: 03/07 03:24 PM EST by michael : Note that space.com does not use permanent URLs for these "breaking news" stories, so the link above is wrong, but should be findable, for a time at least, on the space.com site.