Obama was sworn as the 44th U.S. president, acknowledging in his inaugural address that the nation is in crisis, but that America remains powerful. full story
When Barack Obama addresses millions during his inauguration, he will continue a tradition that started with George Washington's speech 220 years ago. Interactive
107-year-old: 'Nothing but the greatest!' At 107 years old, Cooper said she always believed she might live to see a black man sworn in as president of the United States.