Following a fire aboard the Euroferry Olympia car ferry in the southern Adriatic near the Greek island of Corfu, 12 passengers have yet to be accounted for, Greek state radio reported on Saturday. Special rescue teams are becoming increasingly desperate according to the special commander of the Greek civilian service, Giorgos Mitsis. The operation to rescue the passengers shown on the passenger list but not yet found aboard the Italian vessel is being hampered, or even made impossible, by the extreme temperatures on the ferry’s deck. “We are measuring temperatures of around 600 degrees on the …