In 1901, sponge divers off the Greek island of Antikythera pulled a corroded lump of bronze out of a Roman shipwreck, and it sat in an Athens museum for half a century before anyone realised they had found a 2,000-year-old computer that could predict eclipses 19 years in advance. (opens in new tab)

In the spring of 1900, a crew of Symi sponge divers en route to fishing grounds off North Africa were forced to shelter from a storm off the island of Antikythera. A diver surfaced babbling about horses and corpses on the seabed 45 meters below. His crew had stumbled onto a Roman cargo ship that […]