Scientists now believe that a series of slits, not a giant gash, sank the Titanic. The opulent, 900-foot cruise ship sank in 1912 on its first voyage, from England to New York. Fifteen hundred people died in the worst maritime disaster of the time.

The most widely held theory was that the ship hit an iceberg, which opened a huge gash in the side of the liner. But an international team of divers and scientists used sound waves to probe the wreckage, buried in the mud under two-and-a-half miles of water. Their discovery? The damage was surprisingly small. Instead of the huge gash, they found six relatively narrow slits across the six watertight holds.

Small damage, invisible to most, can sink not only a great ship but a great reputation.