
ASSOCIATED PRESS/CBS The cast of "Big Brother 13" consists of eight new guests and a few power duos from previous seasons. The new chapter of the voyeuristic reality TV series, titled "Double Trouble," premieres Thursday on CBS.

This July 1, 1952 file photo provided by CBS shows TV Washington newsman Walter Cronkite. (Photo: Associated Press)

Former House Speaker Newt Gingrich, who is running for the Republican presidential nomination, appears on CBS' "Face the Nation" on Sunday, May 22, 2011, in Washington. (AP Photo/CBS News, Chris Usher)

In this March 21, 2009 file photo Lance Armstrong, right, of the United States, pedals with fellow-countryman George Hincapie, left, during the Milan-San Remo cycling classic, in San Remo, Italy. A report by "60 Minutes" says Hincapie, a longtime member of Lance Armstrong's inner circle, has told federal authorities he saw the seven-time Tour de France winner use performance-enhancing drugs. A segment of the report aired Friday night, May 20, 2011 on the "CBS Evening News." (AP Photo/Alessandro Trovati, File)

In this image taken from video and released by CBS, President Obama is seen during a May 4 interview with “60 Minutes” correspondent Steve Kroft at the White House. During the interview, Obama told Kroft that he decided not to release the photos taken of Osama Bin Laden after he was killed by Navy SEALS in Pakistan. (Associated Press/CBS)

In this image taken from video and released by CBS, President Barack Obama is seen during an interview with “60 Minutes” correspondent Steve Kroft at the White House in Washington, Wednesday, May 4, 2011. During the interview, Obama told Kroft that he decided not to release the photos taken of Osama Bin Laden after he was killed by Navy SEALS in Pakistan. (AP Photos/CBS)

CBS via associated press President Obama, in an interview with "60 Minutes" correspondent Steve Kroft, said he would not authorize the release of photos taken of Osama bin Laden after he was killed by Navy SEALS. His administration does, however, want to analyze materials seized by Pakistani authorities at bin Laden's compound.

**FILE** "60 Minutes" correspondent Scott Pelley is seen here in a 2005 photo released by CBS. CBS announced Tuesday that Pelley, the veteran "60 Minutes" reporter, will take over as its evening news anchor, starting on June 6, to replace Katie Couric on the "CBS Evening News." (Associated Press/CBS, John Filo)

CBS Scott Pelley, a correspondent for CBS' long-running "60 Minutes," is said to be in line to take over the anchor duties of the "CBS Evening News."