He told Winfrey that he then developed a "ruthless and relentless" attitude that helped him survive.

CNN: STORY HIGHLIGHTS

"We wouldn't be sitting here if I didn't come back, " he told Winfrey.

CNN: STORY HIGHLIGHTS

Armstrong told Winfrey he was open to talking with anti-doping agencies, including USADA, to address what he called a pervasive "culture" of breaking the rules to get ahead.

CNN: STORY HIGHLIGHTS

Armstrong, in an interview aired this week, told Oprah Winfrey he engaged in doping from the mid-1990s to 2005, the year of his last of seven Tour de France titles and when he began his first retirement.

CNN: January 19, 2013 -- Updated 0121 GMT (0921 HKT)

Actor Rob Lowe told Oprah Winfrey on her chat show that he and his family had fled from their home as the flames suddenly closed in.

BBC: Fire destroys California mansions

She told Winfrey that she gained permission to take the baby to a clinic, where he was given antibiotics.

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Armstrong told Winfrey that the unraveling of his career is the second time in his life that he could not control his life's narrative -- the last time was when he had cancer.

CNN: STORY HIGHLIGHTS