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This product uses TMDB and the TMDB APIs but is not endorsed, certified, or otherwise approved by TMDB.
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Sound--you don't think much about it, but futurists and entrepreneurs do. Host Chuck Pell catches up with two college-age inventors who've created a fire extinguisher that puts out fires--with sound waves. Another inventor has created a 'sound cloaking' device that could make submarines invisible to sonar. And sound waves can also be used to defy gravity--provided you can generate enough noise.
