This 5-Man Mini-Sub Brings the Deep Ocean's Treasures Within Reach

In some ways, exploring the depths of the ocean is every bit as technically challenging as investigating the surface of Mars. In fact, we have a far more detailed understanding of the Red Planet than we do of what goes on under the sea. But this new, affordable manned submersible aims to open undersea exploration to… » 9/20/13 11:30am 9/20/13 11:30am