"Náttúra" is a song written and recorded by Icelandic singer Björk featuring English musician Thom Yorke. The track was released as a single promoting the protection of the Icelandic environment. All proceeds from the single were donated to the Náttúra Foundation, the environmental preservation campaign after which the song is named. The single was initially discovered by Björk's French-language fan website and was later confirmed by the singer's representatives. It was released on 20 October 2008 as an iTunes exclusive, and had a wide digital release on 27 October. The song was given a physical release on 20 April 2009, with a white label vinyl released by One Little Indian's web shop. The single was included on the deluxe version of Björk's 2011 album Biophilia.