Live Earth

Roger Waters performs in New Jersey during the Live Earth concert held at Giants Stadium on July 7, 2007.

The Police perform on July 7 2007 at the Live Earth concert held in Giants Stadium in East Rutherford, New Jersey.

Dave Matthews performs onstage during Live Earth New York at Giants Stadium on July 7, 2007 in East Rutherford, New Jersey.

Bon Jovi performs in New Jersey during the Live Earth concert held at Giants Stadium on July 7, 2007.

Bassist Pete Wentz of Fall Out Boy performs onstage during Live Earth New York at Giants Stadium on July 7, 2007 in East Rutherford, New Jersey.

Country music singer Garth Brooks performs alongside Trisha Yearwood at the Live Earth concert 07 July 2007 at the National Museum of the American Indian in Washington, DC.

Rapper Pharrell performs during the Live Earth concert in Rio de Janeiro 07 July, 2007, at the Copacabana beach.

Madonna performs on stage with Eugene Hutz of Gogol Bordello during the Live Earth concert held at Wembley Stadium on July 7, 2007 in London.

Dave Grohl of the Foo Fighters performs on stage during the Live Earth concert at Wembley Stadium on July 7, 2007 in London, England.

Bianca Jagger speaks to the crowd during the Live Earth concert in Hamburg, Germany on July 7, 2007.

Kanye West performs during the Live Earth concert 07 July 2007 in Giants Stadium in East Rutherford, New Jersey.

Shakira performing at Live Earth in Hamburg, Germany on July 7, 2007.

Snoop Dogg performs during the Live Earth concert in Hamburg, Germany on July 7, 2007.

James Hetfield of Metallica performs at the Live Earth concert at Wembley stadium in London, 07 July 2007.

Adam Horvitz, Mike Diamond and Adam Yauch of the Beastie Boys performing at the Live Earth concert at Wembley stadium in London, 07 July 2007.

Spoof heavy metal band Spinal Tap perform on stage during the Live Earth concert at Wembley Stadium on July 7, 2007 in London, England.

Gary Lightbody, lead singer of British pop band Snow Patrol, performs at the Live Earth concert at Wembley stadium in London, 07 July 2007.

Chester Bennington of Linkin Park peforms on stage at the Tokyo leg of the Live Earth series of concerts, at Makuhari Messe, Chiba on July 7, 2007 in Tokyo, Japan.

A video message from Al Gore is displayed at the Tokyo leg of the Live Earth series of concerts, at Makuhari Messe, Chiba on July 7, 2007 in Tokyo, Japan.

A view of the scenic Live Earth Kyoto venue while Japanese hip-hop group Rip Slyme perform on July 7, 2007. The Live Earth concerts around the world to highlight the dangers of global warming, supported by former US vice-president Al Gore, are expected to attract an audience of two billion people