The latest album from the rock band Pink Floyd is going to result in the creation of four new long term indigenous forests, with the number of copies being sold reflected in the number of trees planted. The band's new album, Echoes, a two CD retrospective with 26 greatest hits, will become carbon neutral, so that the carbon emissions resulting from its production and distribution will be offset by the planting of indigenous forests in Dryhope Burn, Scotland; Bangalore, India; Chiapas, Mexico; and Tensas River National Wildlife Park, Louisiana in the US.