Sir David Attenborough on 'largest dinosaur' discovery

Sir David Attenborough has spoken to Huw Edwards about the discovery of a new species of titanosaur, which is believed to be the biggest animal ever to walk the Earth.

The discovery is the subject for a new BBC One programme.

Viewers in the UK can watch Attenborough And The Giant Dinosaur on BBC One on Sunday 24th January at 18:30 GMT, of afterwards on the iPlayer.