States with the most registered sex offenders
The Obamas participate in Saturday's National Day of Service by helping out at an elementary school.
The public inauguration of President Barack Obama and Vice President Joe Biden is happening Monday, but the president and vice president have already taken their official oaths and celebrations have started this weekend.
Mark Strickert, 50, of Austin, Texas, was found floating face down and unresponsive.
An Air Algerie flight with 116 people on board has dropped off radar, prompting a search for the missing plane, the airline's operator said Thursday.