Albarn challenges Gallagher to campaign for Greenpeace

British rocker Damon Albarn has challenged his former rival Noel Gallagher to show his worth - by campaigning for Greenpeace.

Oasis star Gallagher, who infamously said he wished Albarn would die of AIDS at the height of their feud in the mid-1990s, last month confessed his admiration for Albarn's prolific work ethic in bands Blur, Gorrilaz and The Good, The Bad & The Queen.