Nobel Peace Prize 2011

From left, Sweden's Queen Silvia, King Carl XVI Gustaf and Crown Princess Victoria attend the Nobel Prize ceremony at the Concert Hall in Stockholm, Sweden, on Dec. 10, 2011.

This year's Nobel Peace Prize winners include Liberian peace activist Leymah Gbowee, Tawakkol Karman of Yemen and Liberian President Ellen Johnson-Sirleaf. The women were honored on Dec. 10 in two ceremonies in the Swedish and Norwegian capitals. The next day, a tribute concert was held in Oslo, featuring performances by David Gray, Sugarland, Jill Scott and others.

From left, the 2011 Nobel Prize Laureates for Physics Professor Adam G. Riess from the U.S., Swedish Crown Princess Victoria and Dr. Brian P. Schmidt from Australia speak during the 2011 Nobel Prize Banquet at the Town Hall in Stockholm, Sweden, on Dec. 10, 2011.

From left, Queen Sonja of Norway, Princess Mette-Marit of Norway and Prince Haakon of Norway attend the Nobel Peace Prize Award Ceremony at Oslo City Hall on Dec. 10, 2011, in Oslo, Norway.

The Norwegian royal family, from left, King Harald V, Queen Sonja, Crown Princess Mette-Marit and Crown Prince Haakon attend the Nobel Peace Prize award ceremony at City Hall in Oslo, on Dec. 10, 2011.

Norwegian King Harald V and Queen Sonja attend the 2011 Nobel Peace Prize award ceremony on Dec. 10, 2011, at City Hall, in Oslo, Norway.

The 2011 Nobel Prize Laureate for Physics Professor Saul Perlmutter of the U.S. and Sweden's Queen Silvia smile for photographers at the start of the 2011 Nobel Prize Banquet at the Town Hall in Stockholm, Dec. 10, 2011.

Sweden's Queen Silvia listens to speeches during the 2011 Nobel Prize Banquet at the Town Hall in Stockholm, Dec. 10, 2011.

Victoria, Crown Princess of Sweden, bottom left, the 2011 Nobel Prize Laureate for Physics Dr. Brian P. Schmidt from Australia, bottom right, the 2011 Nobel Prize Laureate for Physics Professor Saul Perlmutter from the U.S., top right, and Dr. Nadia Sherline arrive for the start of the 2011 Nobel Prize Banquet at the Town Hall in Stockholm, Dec. 10, 2011.

Rosario Dawson attends the press conference ahead of the Nobel Peace Prize Concert at Oslo Spektrum on Dec. 11, 2011, in Oslo, Norway.

Members of country music duo Sugarland, Jennifer Nettles and Kristian Bush speak during a press conference for the Nobel Peace Concert on Dec. 11, 2011, in Oslo, Norway.

Rosario Dawson and Helen Mirren attend the press conference ahead of the Nobel Peace Prize Concert at Oslo Spektrum on Dec. 11, 2011, in Oslo, Norway.

Helen Mirren and Jill Scott attend the press conference ahead of the Nobel Peace Prize Concert at the Oslo Spektrum on Dec. 11, 2011, in Oslo, Norway.

British singer David Gray performs at the Nobel Peace Prize concert in Oslo on Dec. 11, 2011. Artists from all over the world gathered at the Oslo Spektrum to help spread the message of peace and celebrate this year's Nobel Peace Prize laureates.

Rock band Evanescence performs at the Nobel Peace Prize concert in Oslo on Dec. 11, 2011. Artists from all over the world gathered at the Oslo Spektrum to help spread the message of peace and celebrate this year's Nobel Peace Prize laureates, Liberain President Ellen Johnson Sirleaf, her compatriot Leymah Gbowee and Yemini "Arab Spring" activist Tawakkol Karman.

Actresses Helen Mirren and Rosario Dawson co-host the Nobel Peace Prize concert in Oslo, on Dec. 11, 2011. Artists from all over the world gathered at the Oslo Spektrum to help spread the message of peace and celebrate this year's Nobel Peace Prize laureates.

Jennifer Nettles and Kristian Bush of Sugarland perform at the Nobel Peace Prize Concert at Oslo Spektrum on Dec. 11, 2011, in Oslo, Norway.

Janelle Monae performs at the Nobel Peace Prize Concert at the Oslo Spektrum on Dec. 11, 2011, in Oslo, Norway.

Jill Scott performs at the Nobel Peace Prize Concert at the Oslo Spektrum on Dec. 11, 2011, in Oslo, Norway.

Musician Janelle Monae and host Rosario Dawson speak during the Nobel Peace Prize Concert at Oslo Spektrum on Dec. 11, 2011, in Oslo, Norway.

Miatta Fahnbulleh performs at the Nobel Peace Prize Concert on Dec. 11, 2011, in Oslo, Norway.

David Gray performs at the Nobel Peace Prize Concert at the Oslo Spektrum on Dec. 11, 2011, in Oslo, Norway.

The Nobel Peace Prize winners sing with Norwegian singer Bernhoft, Janelle Monae and Beninoise singer Angelique Kidjo during the Nobel Peace Prize concert in Oslo on Dec. 11, 2011.

From left, Nobel Peace Prize winners, Liberian peace activist Leymah Gbowee, Tawakkol Karman of Yemen and Liberian president Ellen Johnson-Sirleaf hold hands in solidarity from the balcony of the Grand Hotel during a torchlight procession in their honor in Oslo, Norway, Dec. 10, 2011.

The peace prize committee awarded the prize to Karman, Johnson-Sirleaf and Gbowee for championing women's rights in regions where oppression is common and helping women participate in peace building.

From left, Nobel Peace Prize laureates Liberian peace activist Leymah Gbowee, human rights activist Tawakul Karman from Yemen and Liberian President Ellen Johnson-Sirleaf Nobel attend a press conference at Nobel institute on Dec. 9, 2011. Five Nobel Peace Prize winners have launched a campaign to free last year's laureate, jailed Chinese dissident Liu Xiaobo, saying they feared the world will forget that he is still imprisoned.