Presented by Sir David Attenborough, Waking Giants tells the remarkable story of one of the ‘dinosaur finds of the century’ - 200 bones from seven giant creatures that have recently been unearthed after 100 million years of lying undiscovered beneath the South American desert - one thigh bone alone measures 2.4 metres - an absolute record. Sir David and the team think they could have stumbled upon the largest dinosaur and indeed the largest animal that has ever walked on Earth. To prove this, they must race to unearth the rest of the bones and erect a skeleton - no mean feat given they estimate it to be 40m long. Meanwhile, Sir David links together clues from the bones with evidence from living giants like elephants and giraffes to reveal new ideas as to how and why these dinosaurs grew to be the size of whales! In this extraordinary pre-historic detective story, Sir David investigates a once-in-a-lifetime discovery that experts believe will rewrite text books and could change the way we look at dinosaurs forever.