Former U.S. Vice President and winner of this year's Nobel Peace Prize Al Gore holds a speech during a climate congress in Berlin

 
Former U.S. Vice President and winner of this year
Former U.S. Vice President and winner of this year's Nobel Peace Prize Al Gore holds a speech during a climate congress in Berlin October 23, 2007. The text in the background reads: 'Energy needs impulses.' REUTERS/Hannibal Hanschke (GERMANY)