Former Vice President Al Gore speaks during a news conference Thursday, Feb. 15, 2007, in Los Angeles, where he announced his climate change concerts. The concert series, which features a powerhouse lineup from the Red Hot Chili Peppers to Snoop Dogg to Bon Jovi, hopes to trigger a broad movement to address what the former vice president calls a global climate crisis. (AP Photo/Nick Ut)
Former Vice President Al Gore speaks as actress Cameron Diaz, left, listens during a news conference Thursday, Feb. 15, 2007, in Los Angeles, where Gore announced his climate change concerts. The concert series, which features a powerhouse lineup from the Red Hot Chili Peppers to Snoop Dogg to Bon Jovi, hopes to trigger a broad movement to address what the former vice president calls a global climate crisis. (AP Photo/Nick Ut)
Former vice president Al Gore listens as actress Cameron Diaz speaks during a news conference Thursday, Feb. 15, 2007, in Los Angeles, where Gore announced his campaign of climate change concerts. The concert series, which features a powerhouse lineup from the Red Hot Chili Peppers to Snoop Dogg to Bon Jovi, hopes to trigger a broad movement to address what the former vice president calls a global climate crisis. (AP Photo/Nick Ut)
Alex Gonzales, left, and Fernando Olvera, right, members of the band Mana, speak during a news conference while former vice president Al Gore listens Thursday, Feb. 15, 2007, in Los Angeles where Gore announced his climate change concerts. The campaign, Save Our Selves — The Campaign for a Climate in Crisis, hopes to trigger a broad movement to address what the former vice president calls a global climate crisis. More than 100 performers, including Mana, are scheduled to appear at the July concerts. (AP Photo/Nick Ut)
Producer and singer Pharrell Williams (C) speaks as actress Cameron Diaz (L) and former U.S. vice president Al Gore attend a news conference for the 'Live Earth' concerts in Los Angeles, February 15, 2007. (Fred Prouser/Reuters)
edited to add...
Producer and singer Pharrell Williams (C) is hugged by former vice president Al Gore, as actress Cameron Diaz (L) and producer Kevin Wall attend a news conference for the 'Live Earth' concerts in Los Angeles, February 15, 2007. (Fred Prouser/Reuters)
Producer Kevin Wall (C) speaks as actress Cameron Diaz (L) and former Vice President Al Gore attend a news conference for the 'Live Earth' concerts in Los Angeles, February 15, 2007. (Fred Prouser/Reuters)