Summary: Headphones are dangerous, simply because they block out everything else that's going on outside. But what if you could hear what's going on and still listen to the audio? Bethesda, MD-based David Nghiem noticed that municipalities have been banning headphones while driving or biking, for obvious reasons. So Nghiem's company, Conduit, is focused on developing bone-conduction, 'off-ear' headphone technology.
