Al Gore speaks at the closing day of the First American Congress of Biocombustibles in Buenos Aires

 
Al Gore speaks at the closing day of the First American Congress of Biocombustibles in Buenos Aires
Former U.S. Vice-President and environmental crusader Al Gore speaks at the closing day of the First American Congress of Biocombustibles at the Alver Palace Hotel in Buenos Aires May 11, 2007. REUTERS/Enrique Marcarian (ARGENTINA)