Sound waves do far more than carry music or voices. In science and engineering, they help map the seafloor, monitor earthquakes, guide submarines, and even shatter kidney stones inside the human body.

The Cold War introduced the world to the concept of mutually assured destruction. This was an arms race that saw sides on both sides of the Iron Curtain scrabble to gain an edge. One area where this ...

The US Navy has tidied up after itself by, for the first time, launching and recovering a Yellow Moray Unmanned Underwater Vehicle (UUV) through the standard torpedo tube of a Virginia class nuclear ...