Alexander Graham Bell's voice captured from old recordings

After 128 years, new technology brings the great inventor's voice back to life. Alexander Graham Bell is known for inventing the telephone; but for someone so associated with sound, it's curious that no one living has actually ever heard the tenor of his voice. However, as of Wednesday, anyone can hear what he sounded like.

Audio-based virtual gaming aims to help the blind navigate

Using only audio-based cues within the context of a video game metaphor, blind users in a study out of Harvard are able to explore a building's layout.