A kid downloads a song to his smartphone then forwards it to his stereo system--all without plugging in a single cable or wire. the eyepiece on a soldier's helmet has a GPS map of the battlefield, showing right where his buddies are. An artificial heart is recharged wirelessly--right through the patient's ribcage. a surfboard is rigged with a webcam and Wi-Fi, so Web surfers around the world can see up-close footage of the real surfer's surroundings...