costa concordia salvage
Salvage crews finished pulling the Costa Concordia wreck upright on Tuesday, more than 20 months after the cruise ship capsized
The Associated Press explains parbuckling, the process that's being used to salvage the Costa Concordia wreck.
Salvage crews are working against time to remove the shipwrecked Costa Concordia cruise ship, which is slowly being crushed under its own weight on its perch of granite seabed off the Tuscan island of Giglio. Officials said Monday that if this attempt fails, there won't be a second chance.