Photos of the Day: Photos of the day 05/21
In Pictures: Sinkholes around the world
In Pictures: What happened to the green revolution in Iran?
In Pictures: Facing the devastation of the Oklahoma tornadoes
In Pictures: Sandy: Chronicle of an unrelenting storm
Photos of the Day: Photos of the day 05/20
In Pictures: Weather extremes 2013
In Pictures: The Israeli separation barrier: A West Bank wall
In Pictures: Derby Day devotees, Kenyan style
Comedian Conan O'Brien performs during a stop of 'The Legally Prohibited From Being Funny on Television Tour' in Vancouver, British Columbia, on April 13.
A Conan O'Brien fan wears his newly applied 'badge' to show support of the late night comedian following announcements that O'Brien may be leaving NBC after Leno's 10pm 5 month experiment failed to bring in viewers.
In this image taken from video and released by CBS, former 'Tonight Show' host Conan O'Brien talks with '60 Minutes' correspondent Steve Kroft, at O'Brien's Los Angeles home, on April 21.
New Tonight show host Conan O'Brien, keeps everyone laughing, including Pam Giganti (r.) during a visit to Channel 6 in Miramar, Florida.
Conan O'Brien and his wife Liza Powell arrive at the 61st annual Primetime Emmy Awards in Los Angeles, California on Sept. 20, 2009.
Hundreds of people show up in the pouring rain in front of Universal Studios to show their support for Conan O'Brien.
In this 2009 photo, Conan O'Brien makes his debut as the host of NBC's 'The Tonight Show' in Universal City, Calif.
Ten-year-old Beth Bills from Downers Grove, Ill. stands in front of NBC in Chicago showing her support for Conan O'Brien.
Conan O'Brien is seen at the 59th Annual Primetime Emmy Awards.
Conan is seen in New York prior to his debut as host of 'The Tonight Show.'
Photos of the Day: Photos of the day 05/21
In Pictures: Sinkholes around the world
In Pictures: What happened to the green revolution in Iran?
In Pictures: Facing the devastation of the Oklahoma tornadoes
In Pictures: Sandy: Chronicle of an unrelenting storm
Photos of the Day: Photos of the day 05/20
In Pictures: Weather extremes 2013
In Pictures: The Israeli separation barrier: A West Bank wall
In Pictures: Derby Day devotees, Kenyan style
Aleppo was once the economic heart of Syria, with factories ringing the city. But war destruction and a lack of electricity and materials has caused most of them to shut down.
In opposition-controlled Aleppo, once the economic heart of Syria, few businesses have survived the war, which has reduced entire neighborhoods to rubble amid fighting, scud missile attacks, airstrikes, and artillery bombardment.
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-21
/Photo-Galleries/In-Pictures/Sinkholes-around-the-world
/Photo-Galleries/In-Pictures/What-happened-to-the-green-revolution-in-Iran
/Photo-Galleries/In-Pictures/Facing-the-devastation-of-the-Oklahoma-tornadoes
/Photo-Galleries/In-Pictures/Sandy-Chronicle-of-an-unrelenting-storm
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-20
/Photo-Galleries/In-Pictures/Weather-extremes-2013
/Photo-Galleries/In-Pictures/A-West-Bank-wall
/Photo-Galleries/In-Pictures/Derby-Day-devotees-Kenyan-style
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-16
/Photo-Galleries/In-Pictures/Dazzle-like-Beckham
/Photo-Galleries/In-Pictures/Covert-commerce-smugglers-tunnels-at-the-Egypt-and-Gaza-border