Eavesdropping on elephants

	VIDEO
CNN's Ann Kellan looks at how one researcher is keeping an ear on the elephants. Windows Media 28K 80K

March 15, 2000
Web posted at: 5:59 p.m. EST (2259 GMT)

ITHACA, New York (CNN) -- If you've ever been to the zoo you know that elephants like to make loud noises. Scientists have now learned that elephants also make low sounds that humans can't hear. These low frequency noises, called infrasound, are similar to the noises whales make.

Despite the recent discovery, many mysteries remain about the way elephants communicate. One ambitious researcher wants to tap into elephant conversations by wiring an entire African forest with special microphones.

CNN correspondent Ann Kellan has the full story.

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