David Pescovitz
11:38PM Tuesday 13 August

We've posted several times about blind people who have learned how to "see" and navigate the world using echolocation like bats, shrews, and whales. In the video above, YouTuber Molly Burke and echolocation educator Brian Bushway, who are both blind, try to teach It's Okay To Be Smart's Dr Joe Hanson, who is sighted, the fundamentals of this extraordinary skill. Read More »