This Robotic Barnacle Scans Ships' Hulls Looking for Contraband

Big ports have always struggled to keep an eye on every single ship that passes through their waters—especially the part of the boat that's underwater. Now, there's a new sort of robotic barnacle that can stealthily slide along the hulls of incoming ships and scan for hidden compartments where smugglers hide their… »9/26/14 3:45pm9/26/14 3:45pm