Former Alaska Gov. Sarah Palin.

The latest on the shooting at Fort Hood; singer Rihanna discusses her relationship with ex-boyfriend Chris Brown, growing up in Barbados, and her family life; hidden-camera situations... Full summary

A family in New Hampshire still searches for a teenage girl who disappeared in 1971; police receive a tip about a teenage girl from Massachusetts who disappeared 20 years ago.

An examination of topics from Steven Levitt and Stephen Dubner's new book,"SuperFreakonomics," including the affect of the feminist movement, altruism, talent and simple solutions to... Full summary

Carmina Salcido talks about her life since surviving an attack by her father that took the lives of seven people, including her mother, grandmother and sisters.

Brooke Astor's 85-year-old son, Tony, is convicted of 14 criminal counts, including grand larceny and fraud; actress Valerie Bertinelli discusses her new outlook on her body, motherhood... Full summary

Extreme treatment of people living with albinism; in Tanzania, albinos are killed so witch doctors can use their body parts in potions; a teenage girl, tired of being teased and... Full summary

Authorities investigate the 2003 murders of four recent high-school graduates, shot in a home in Houston.

Women try to stop Philippe Padieu, an HIV-positive man, from knowingly infecting other women.

La Toya Jackson talks to Barbara Walters about the Jackson family, her impressions of her late brother Michael's children, and why she believes Michael was murdered; the complicated... Full summary