Former U.S. Vice President Al Gore speaks during the Skybridge Alternatives Conference in Las Vegas

 
Former U.S. Vice President Al Gore speaks during the Skybridge Alternatives Conference in Las Vegas
Former U.S. Vice President Al Gore speaks during the Skybridge Alternatives (SALT) Conference in Las Vegas, Nevada May, 9, 2012. SALT brings together public policy officials, capital allocators, and hedge fund managers to discuss financial markets. REUTERS/Steve Marcus (UNITED STATES - Tags: BUSINESS POLITICS)