Don, if you ever heard of echo location. Echo location is the ability of animals such as bats and dolphins. To learn about this around by emitting sounds analyzing the returning echoes. It's kind of like a natural sonar bad Sousa to hunt and capture flying insects and total darkness dolphins. Use it to sense their surroundings in the murky depths of the sea that is you know, that some people have the ability to echo locate to you've got to be kidding. It's true. Scientists have shown that many blind people develop enhanced hearing abilities some have learned to use the returning echoes of tongue clicks or finger snaps to give them a crude knowledge of the directions distances shapes and sizes of objects in their surroundings in their daily lives. They can use this ability and activities such as exploring cities and hiking. Some of them can even play basketball or void obstacles while riding a bike people usually use site to do these. Yes, that's true. And narrow scientists have shown that this is a case of sensory substitution. When blind people echo locate some of the same brain areas that cited people use when they assess objects visually, become active. They even experienced some of the same perceptual illusions as for vision or can't imagine what would be like, it really isn't a strange as you think in all of us. The senses worked together to help us. Learn about the world. Researchers have shown that cited people can be taught to echo locate to in bats and dolphins. These abilities have simply become much more highly developed this moment of science come from Indiana University. There are thousands more moments of science on our website at a moment of science dot org. I'm Yale Cassandra darn dog less.