恐龙消失于六千五百万年前，古生物学家需要从仅有的骨骼确定恐龙的完整形态，包括骨架、肌肉、姿态等等。Alice Roberts博士讲述洛杉矶自然博物馆布置恐龙展览的过程。 Dr Alice Roberts finds out how the experts put dinosaur skeletons back together, with muscles, accurate postures and even, in some cases, the correct skin colour.
