TOKYO - NOVEMBER 19:  Former U.S. Vice President and 2007 Noble Peace Prize Laureate Al Gore greets the audience upon receiving an honorary doctorate at Waseda University November 19, 2008 in Tokyo, Japan. The Honorary Doctorate Degree Conferment Ceremony is part of the Global Summit for Ecology, which is expected to be held in the G8 summit countries continuously in the future. Getty Images logo Getty Images 12 months ago

TOKYO - NOVEMBER 19: Former U.S. Vice President and 2007 Noble Peace Prize Laureate Al Gore greets the audience upon receiving an honorary doctorate at Waseda University November 19, 2008 in Tokyo, Japan. The Honorary Doctorate Degree Conferment Ceremony is part of the Global Summit for Ecology, which is expected to be held in the G8 summit countries continuously in the future.