On 13 July 2017 the Museum unveiled Hope the blue whale, a spectacular 25-metre-long specimen suspended from the ceiling of the Museum's central space, Hintze Hall.Just after the BBC broadcast their Horizon documentary about the new installation, Dippy and the Whale, Richard Sabin, Principal Curator of Mammals, and Lorraine Cornish, Head of Conservation, joined host David Urry for a special #NHM_Live talking about the history, conservation and story behind Hope, direct from our new Whales: Beneath the surface exhibition.