What does a volcano in Iceland have to do with the religious and political struggles going on across the world today? Well it turns out, a LOT… 

Back in 536AD, the skies turned dark and the world cooled. It was all thanks to a massive volcanic eruption in Iceland, that no one even knew had happened. It led to a mysterious plague, which swept through the Roman and Persian Empires. In the great Byzantine city of Constantinople, it was said that 10,000 people were dying every day. 

Between plague and war, the world’s two ‘superpowers’ were too distracted to notice that something major was happening on the Arabian peninsula. The Prophet Mohammed had united the tribes and, when he died, his followers started pushing north. Instead of encountering resistance, they were able to take huge swathes of the Roman Empire and completely destroy the Persian Empire.

Richard Fidler, host of ABC Conversations and the author of The Book of Roads and Kingdoms, tells Marc Fennell (Stuff the British Stole, Mastermind) the incredible true story of how the language of Arabic and religion of Islam spread across the world, thanks (in part) to a natural disaster and climate change.

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