Some blind people have learned to use echolocation to find their way around. That is, they produce a sound and wait for it to bounce off obstacles and echo back to them. With the returning echo, they can detect the size and location of obstacles and carefully avoid them.
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Creepy Facts And Odd Stories
RandomJust a short collection of things you may not have heard of. (Stories, facts, and urban legends) All credit goes to Listverse and Google.
