Sometimes, the bad guys come by sea. A U.S. researcher has come up with a new, non-lethal way to deter malicious undersea divers: an acoustic technique that would overwhelm them with the sound of ...

Scuba (Self-Contained Underwater Breathing Apparatus) is an acronym we usually associate with face-masks, breathing tubes and back-mounted tanks, but the Scuba-Doo Motorised Scuba Bike opens a new ...