In this live-action, fast-paced program, Bill Nye the Science Guy shows how it's easy to see the difference between human and animal communication -- it's the signs and symbols that people use to pass information which sets them apart. In addition, viewers will see how the expressiveness of American Sign Language enables people with hearing impairments to communicate. Features comedy, music videos, interviews with real scientists and hands-on experiments to make the concepts presented understandable and fun. Disney Educational Production. c 1995, 2004 Disney.