Italian Workers Try To Refloat Capsized Costa Concordia     The
most complicated part of the largest maritime salvage in history
gets underway in Italy today. It's the re-floating of the 1,000
foot long wreck of the Costa Concordia - a luxury liner capsized
in 2012.  NPR's Sylvia Poggioli joins us on the line from an
island off the Tuscan coast.  Hi, Sylvia.   INSKEEP: So, what
have you seen?  POGGIOLI: Well I came in early this morning by
ferry, and the ferry went right by the wreck. What you can see
is that it's got these huge tanks attached to it. And there are
a lot of tugboats. There was an enormous amount of activity -
cranes, cables, etc. But it's going to be a long process, a slow
process.  INSKEEP: So, you said large tanks attached to it. How
does this operation actually work?  POGGIOLI: Well, you know,
the Concordia's sitting on huge custom-made underwater platform
at a depth of 90 feet. It's been fitted with these airtight
metal tanks called sponsons, filled with water. Today, they're
gradually bei