Celebrity Earth Hour ambassadors who are supporting the Earth Hour message include; Nobel Peace Prize winner Archbishop Desmond Tutu, Helen Clark (former New Zealand Prime Minister), Lithuanian President Valdas Adamkus, The Cranberries, Andox and Box from Hong Kong, Mayor of London Boris Johnson, former Spice Girl Melanie Chisholm, and a panda named Mei Lan. At the moment 214 ambassadors have signed on to support EH 2010. __