Rebels Advance On Libyan Capital Of Tripoli

Rebels continue to push toward the Libyan capital of Tripoli amid rumors Col. Moammar Ghadafi may be preparing to flee the country. Heavy fighting has been reported in Tripoli, and rebel fighters have taken control of towns to the east, west, and south of the city. NPR's Lourdes Garcia-Navarro speaks to guest host Laura Sullivan from the war zone.