Sight

Inside the quest to build the “Holy Braille,” an inexpensive e-tablet for the blind

Designers have dreamed about creating a refreshable, affordable full-page Braille display, and a team at the University of Michigan has found an ingenious solution in bubbles. T...

A walk with Daniel Kish, who navigates the world using “flash sonar”

Daniel Kish glides a white cane over the marble floor of the Fairmont Pacific Rim Hotel. He’s in Vancouver, Canada, to speak at TED2015, and he’s just been alerted by the speake...