A routine dive for shipwrecks off the Mediterranean coast at Atlit, Israel turns into the discovery of a lifetime for maritime archaeologist Ehud Galili when he stumbles upon the perfectly preserved remains of a 9,000-year-old settlement, Atlit Yam. Among the findings: a megalithic stone circle, twice as old as Stonehenge. Who were the people who built this remarkable monument? Why did they do it? And what rituals were held here? A remarkable breakthrough in DNA technology may answer these and other questions surrounding this mysterious find.

After over a thousand years of rule, the mighty Roman Empire was finally brought to its knees in the 5th century by the barbaric Huns, led by the infamous Attila. At least, that's what we've been led to believe by ancient Roman writers. But a shocking discovery at a 1,600-year-old cemetery in Mozs, Hungary is changing history as we know it. See how the unearthing of 51 strangely shaped, elongated skulls triggered a groundbreaking archaeological investigation that is revealing a new version of the fall of Rome...by those who experienced it firsthand.