A team of marine archeologists using sonar scanners has discovered new underwater treasures in the Italian seas. Trading vessels dating from the first century BC to the 5th through 7th centuries AD were found in the waters of the Pontine Islands. Their cargoes were found to be intact. Italian culture authorities and the Aurora Trust, a U.S. foundation which promotes underwater exploration in the Mediterranean, discovered four shipwrecks resting on the seabed. The discovery was made in a beautiful stretch of sea off the tiny rock of Zannone, part of the Pontine Islands in central Italy. After the discovery, the...