Sunking Ferry News Today

Mom has a headache! had a headache! but now, i& dont. excedrin is fast. in fact for some, relief starts in just 15 minutes. excedrin. headache. gone. rescuers think there still may be survivors in that sunking ferry. south korean crews are pumping oxygen into the ship just in case. though it seems a desperate effort, it is possible to survive such a catastrophe even if the ship has gone completely under the water. tom foreman has more for you. >> reporter: theres still a lot we do not know rig...