Weekend Edition Saturday host Scott Simon documented his mother's final days to his more than 1.2 million Twitter followers. Stephen Voss/NPR hide caption

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Online activist Ali Abdulemam (right) is greeted in Manama, Bahrain, on Feb. 23, 2011, shortly after anti-government protests began. Wanted by the government, he went into hiding the following month. He escaped from Bahrain after two years underground and made his first public appearance Wednesday in Oslo, Norway. Mazen Mahdi/EPA/Landov hide caption

itoggle caption Mazen Mahdi/EPA/Landov

Journalist Marie Colvin (second from left) poses with Libyan rebels in Misrata on June 4, 2011. She was killed in the besieged Syrian city of Homs on Wednesday. Later that day in Tripoli, fellow war correspondents gathered to remember her. Zohra Bensemra/Reuters/Landov hide caption

itoggle caption Zohra Bensemra/Reuters/Landov

An elderly man shouts religous slogans as Libyans celebrate the 1st anniversary marking the start of the Libyan uprising against Moammar Gadhafi in Freedom Square in the eastern city of Benghazi. Gianluigi Guercia/AFP/Getty Images hide caption

itoggle caption Gianluigi Guercia/AFP/Getty Images

If the Nobel Peace Prize is to go to someone involved with the Arab Spring, it may be difficult to choose who gets the award. Here, men celebrate in Tunis after President Zine El Abidine Ben Ali said he would not seek another term.

Fethi Belaid/AFP/Getty Images hide caption

itoggle caption Fethi Belaid/AFP/Getty Images