On the hot and dry land in Africa, a group of thirsty elephants were heading for a water pool less than a mile away. Not knowing why, all of the elephants stopped, with their big ears standing high up in the air. Though it appeared that nothing could be heard, the elephants decided to turn from where the water pool was and walked away quickly. Why was that? What happened? 

       In man's world, communication today becor mes so casy with the help of high technology. We can keep in touch with anyone in almost any part of tho planct in no time. But, what about animals? Animals' communication has been interesting scientists all around the world. After a long time of studying, they have found some really surprising facts. Let's go back to those elephants we just talked about. We can see from the elephants' acts that they're listening to something, and what they have heard tells them to run away. Scientists have found that elephants have their own language to speak with others far away. This special language is spoken infrasound -- sound which is so low that it can't be heard by our ears.

        Now do you still think man is the only animal that can "'talk" to each other?