 Two years later, he demonstrated his passion for fossils in "Lost Worlds, Vanished Lives".Attenborough narrated every episode of "Wildlife on One", a BBC One wildlife series that ran for 253 episodes between 1977 and 2005.At its peak, it drew a weekly audience of eight to ten million, and the 1987 episode "Meerkats United" was voted the best wildlife documentary of all time by BBC viewers.