Metallica have been added to the packed bill at London's Live Earth global-warming awareness concert on 7 July (07). The star studded concert - one of many to be staged around the world on the same day - will also feature Red Hot Chili Peppers, Beastie Boys, Foo Fighters, Snow Patrol, Madonna, Genesis, Black Eyed Peas, Bloc Party, Corinne Bailey Rae, Damien Rice, Duran Duran, James Blunt, John Legend and Keane.