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‘Left shark’ copyright, infrastructure for the elderly and the Gardasil controversy

‘Left shark’ copyright, infrastructure for the elderly and the Gardasil controversy

CBC Radio · Posted: Feb 19, 2015 10:28 AM EST | Last Updated: February 19, 2015

Recording artist Katy Perry performs onstage during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona. (Photo by Christopher Polk/Getty Images) (Christopher Polk/Getty Images)

The Current24:35Katy Perry's 'Left Shark' spurs 3D printing copyright battle - Feb 13, 2015

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