The stars came out to perform at a concert Tuesday in  in Oslo, Norway, honoring Nobel Peace laureates Al Gore and the United Nations climate panel said they hoped to draw attention to global warming. Kevin Spacey and Uma Thurman were co-hosts of the concert.

“The whole point is to raise awareness and communicate with everyone else in the world and share our concern for the planet,” Thurman said at a news conference ahead of the show.

Spacey, who is artistic director of London’s Old Vic, said the theater is starting a project next year called “Go for Green” to create a play to teach children to be more environmentally aware.

Gore and the U.N. Intergovernmental Panel on Climate Change shared the Nobel Peace Prize for their efforts to document and spread the word about what the former vice president calls the “planetary emergency” of global warming.

Performers at the annual concert included Kylie Minogue, Alicia Keys, Annie Lennox and Melissa Etheridge. Etheridge won an Oscar for the song “I Need to Wake Up,” which was featured in Gore’s documentary, “An Inconvenient Truth.”

Etheridge said Gore asked her to write the song.
“I was deeply honored, I was deeply moved and then I had to write a song about global warming, which is not easy,” the 46-year-old singer said, adding that Gore’s efforts gave her “a great amount of hope for our Earth.”

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