Missing Argentine submarine located by US Navy as oxygen due to run out imminently!
The crew's oxygen supply was due to run out Wednesday morning as they only had enough on board to last seven days
Russia reports radioactivity 986 times the norm after nuclear accident claim
Moscow says "extremely high" levels of ruthenium-106 discovered as Greenpeace urges inquiry into possible cover-up
Signals from missing Argentine sub give hope for rescue effort
When the submarine lost touch with its navy a fire reportedly knocked out the submarine's communications systems