How Krakatoa Caused The Worst Year In History | Catastrophe | Timeline

Researching a climatic catastrophe that rocked the Earth in A.D. 535, 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.