Former US vice-president Al Gore addresses the Hay Festival at Hay-on-Wye, in Wales, Monday May 29, 2006. He began his speech by tackling the subject which was at the foremost of his audience's mind namely his failed presidential bid in 2000. Gore also told the audience about the importance of focusing on what he called a 'generational mission' that faces us all as the climate inexorably gets warmer. (AP Photo / Barry Batchelor/PA)