Exciting evidence emerges of civilizations lost under the waves. But are these ancient cities the long sought-after Atlantis or accidents of geology?

The secrets of the survival of the Roman empire are unearthed from beneath the waves of the Mediterranean and the soil of the Italian peninsula.

In the greatest amphibious invasion fleet ever assembled, 7,000 vessels and 250,000 men take the Nazis by surprise. By draining the ocean, we explain exactly how they did it.