Malaysia Airlines Flight 370: Search efforts have turned up no physical evidence of the missing Malaysia Airlines flight. But Australia's prime minister says there's no time limit yet on the hunt, now involving 20 ships and aircraft.
Malaysia plane: The hunt for Malaysia Airlines Flight 370 move north and east, closer to Australia, based on a new analysis the plane's flight path. On Saturday, Chinese aircraft spotted more possible debris from Flight 370.
Malaysia Airlines Flight 370: Large objects were seen by satellite floating in the Indian Ocean, 1,500 miles southwest of Perth. Malaysian officials called it a "credible lead.' But there have been many false leads in the hunt for Malaysia Airlines Flight 370.
Polar Star is responding to a Jan. 3 request from Australia, Russia and China to assist the Russian and Chinese ships because 'there is sufficient concern that the vessels may not be able to free themselves from the ice.'
A Russian ship remains trapped in ice after a rescue vessel was forced to turn back due to poor visibility. If conditions permit, a helicopter will be used to rescue most of those on board the stranded ship.
An Australian icebreaker is expected to arrive Sunday, to rescue a Russian research ship in Antarctica. Two icebreakers were forced to turn back while attempting to rescue the ship, which has been stuck in heavy ice since Christmas Eve.
Cruise ship couple overboard: Two passengers on a Carnival cruise ship fell overboard off the coast of Australia. Surveillance camera footage shows a 30-year-old man and a 26-year-old woman going overboard.