Here's an inspiring talk by Daniel Kish who has been blind since he was 13 months old and relies on echolocation. > Daniel Kish: How I use sonar to navigate th

Here's an inspiring talk by Daniel Kish who has been blind since he was 13 months old and relies on echolocation. > Daniel Kish: How I use sonar to navigate the world https://www.youtube.com/watch?v=uH0aihGWB8U https://www.youtube.com/watch?v=uH0aihGWB8U