David Attenborough series on the natural history of the polar regions; Attenborough appeared on screen and authored the final episode, in addition to performing voiceover duties. Attenborough introduced and narrated the Unit's first 4K production "Life Story." For "Planet Earth II" (2016), Attenborough returned as narrator and presenter, with the main theme music composed by Hans Zimmer. In October 2014, the corporation announced a trio of new one-off Attenborough documentaries as part of a raft of new natural history programmes. "Attenborough's Paradise Birds" and "Attenborough's Big Birds" was shown on BBC Two and "Waking Giants", which follows the discovery of giant dinosaur
David Attenborough Jack Lester, the curator of the zoo's reptile house, and they decided to make a series about an animal-collecting expedition. The result was "Zoo Quest," first broadcast in 1954, where Attenborough became the presenter at short notice due to Lester being taken ill. In 1957, the BBC Natural History Unit was formally established in Bristol. Attenborough was asked to join it, but declined, not wishing to move from London where he and his young family were settled. Instead, he formed his own department, the Travel and Exploration Unit, which allowed him to continue to front "Zoo Quest" as well as