Researching a climatic catastrophe that rocked the Earth in A.D. 536, causing two years of darkness, famine, drought and disease.
Written records from China, Italy, Palestine and many other countries suggest a huge catastrophe blighted the world in 535AD. But the cause of it has been uncertain.
Was it a comet? An asteroid? A volcano?
Archaeologist David Keys reveals the latter is to blame for the Dark Ages of famine and plague that shaped the world order of today.