Tattoo artist Nate Siggard inks audio soundwaves onto people's skin, allowing them to listen to a favorite piece of music or a loved one's voice any time via a smartphone app.
V!VA: Invisible depression worse than heart attack?
World Stories (Episode 42)
Shift (Episode 42)
Future is here as top surfers take part in test competition at "Surf Ranch"
Hurricane Maria brings destruction, heavy floods to Puerto Rico