TOKYO -- The world's deepest-diving submarine has disappeared in the choppy Pacific Ocean off Japan, a setback to deep-sea research on everything from earthquakes to rare bacteria. Kaiko, a bright ...

Have you ever wanted to explore the great depths of the ocean in your own personal luxury submarine? Now, you can if you have a couple million dollars that is. Triton Submarines LLC, based out of ...

We open today's column with this snippet from the Beatles for the simple reason that that's what the media is now calling the U.S. Navy's newest military asset -- the "yellow submarine." Navy's new ...