Former Vice President Al Gore, right, and former Virginia Sen. John Warner talk on Capitol Hill in Washington, Friday, April 24, 2009, prior to testifying before the House Energy and Environment subcommittee. AP Photo logo AP Photo 6 months ago

Former Vice President Al Gore, right, and former Virginia Sen. John Warner talk on Capitol Hill in Washington, Friday, April 24, 2009, prior to testifying before the House Energy and Environment subcommittee.

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  1. NEW YORK - NOVEMBER 07: (L-R) Staff Sgt. Spencer, marine John Weidenhammer, Lance Cpls. Douglas Williams, Anthony Larcher-Gore, Intrepid Trustee Kent Karosen, Gov. David Paterson, Cpl. Aaron Mankin, Director of the Intrepid Museum, Susan Marenoff and Intrepid Museum President, Bill White attend the Dedication of 9/11 Memorial at Intrepid Sea-Air-Space Museum on November 7, 2009 in New York City.
  2. NEW YORK - NOVEMBER 07: (L-R) Staff Sgt. Spencer, marine John Weidenhammer, Lance Cpls. Douglas Williams, Anthony Larcher-Gore, Intrepid Trustee Kent Karosen, Gov. David Paterson, Cpl. Aaron Mankin, Director of the Intrepid Museum, Susan Marenoff, and Intrepid Museum President, Bill White attend the Dedication of 9/11 Memorial at Intrepid Sea-Air-Space Museum on November 7, 2009 in New York City.
  3. NEW YORK - NOVEMBER 03: Michelle Promaulayko, Mayor Wellington Webb, Chairman and CEO of Rodale Maria Rodale and Editor-in-chief of Men's Health Magazine David Zinczenko attend the Rodale launch party for Al Gore's New Book 'OUR CHOICE: A Plan To Solve The Climate Crisis' at the American Museum of Natural History on November 3, 2009 in New York City.
  4. NEW YORK - NOVEMBER 03: Mayor Wellington Webb and Chairman and CEO of Rodale Maria Rodale attend the Rodale launch party for Al Gore's New Book 'OUR CHOICE: A Plan To Solve The Climate Crisis' at the American Museum of Natural History on November 3, 2009 in New York City.
  5. NEW YORK - NOVEMBER 03: Mayor Wellington Webb, Chariman and CEO of Rodale Maria Rodale and Editor-in-chief of Men's Health Magazine David Zinczenko attend the Rodale launch party for Al Gore's New Book 'OUR CHOICE: A Plan To Solve The Climate Crisis' at the American Museum of Natural History on November 3, 2009 in New York City.
  6. NEW YORK - NOVEMBER 03: Mayor Wellington Webb, Al Gore attend the Rodale launch party for Al Gore's New Book 'OUR CHOICE: A Plan To Solve The Climate Crisis' at the American Museum of Natural History on November 3, 2009 in New York City.
  7. NEW YORK - NOVEMBER 03: Mayor Wellington Webb attends the Rodale launch party for Al Gore's New Book 'OUR CHOICE: A Plan To Solve The Climate Crisis' at the American Museum of Natural History on November 3, 2009 in New York City.
  8. Former U.S. Vice President Al Gore, first left, and Chairman of the Board of the Brookings Institute John Thornton, second right, clap as Chinese Vice Premier Li Keqiang, second left, greets the audience attending the U.S. China Strategic Forum on Clean Energy Cooperation in Beijing, China, Thursday, Oct. 22, 2009. Gore said that cooperation between China and the U.S., the world's two biggest emitters of greenhouse gases, is crucial to tackling the climate change crisis. The man at right is unidentified.
  9. FILE -- In this May 28, 1988 file photo, Senate Minority leader Sen. Robert Dole, R-Kan., left, and Senate Majority leader Sen. Robert Byrd, D-WVa., call President Reagan in Helsinki from Capitol Hill in Washington, Behind them are, from left, Sen. William Cohen, R-Maine; Sen. Claiborne Pell, D-R.I.; Sen. Richard Lugar, R-Ind.; Sen. Alan Simpson, R-Wyo.; Sen. Alan Cranston, D-Calif. ; Sen. Sam Nunn, D-Ga.; Sen. John Warner, R-Va., and Sen. Paul Sarbanes, D-Md.

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