Everyone invited to Tom Cruise's 50th
Tom Cruise says everyone's invited to his 50th birthday do next year. (ROUGH CUT - NO REPORTER NARRATION)
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Sound Waves Underwater : Experiment with Sonar
This animation from the NOVA Web site describes how sonar uses sound waves to see underwater.
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#279: Willingly waived: Migrant workers trading away rights for access to jobs

Labor migration researcher Dr Martin Ruhs discusses the often thorny questions around the rights of migrant labor versus access to work. With host Peter Mares.