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Professor Sir Chris Llewellyn Smith helped secure international funding for construction of the Large Hadron Collider, while Director General at CERN during the 1990s.

He tells Richard Bacon how scare stories at the time over the Large Hadron Collider's safety before the LHC was fired up helped bring the project to wider public attention and secure its future.

This clip is originally from 5 live Richard Bacon on Monday 14 July 2014.