BBC Earth is a brand used by BBC Studios since 2009 to market and distribute the BBC's natural history content to countries other than the United Kingdom. BBC Studios is the commercial arm of the public service broadcaster. BBC Earth commercially represents the BBC Studios Natural History Unit, the largest wildlife documentary production house in the world.[1] It is part of British Broadcasting Corporation. BBC Earth is responsible for the worldwide marketing and distribution of titles such as Planet Earth, Frozen Planet, Life, The Blue Planet, and Planet Earth II. It has generated sales to over 180 countries.