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Scientists Uncover a Volcanic Trigger Behind the Black Death

Summary by Science Daily
A newly analyzed set of climate data points to a major volcanic eruption that may have played a key role in the Black Death’s arrival. Cooling and crop failures across Europe pushed Italian states to bring in grain from the Black Sea. Those shipments may have carried plague-infected fleas. The study ties together tree rings, ice cores, and historical writings to reframe how the pandemic began.

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Due to the cold weather, the harvest was poor, so they were forced to import grain, and a dangerous bacterium also arrived in Europe with the grain.

The bubonic plague pandemic appears to have been caused by a cold wave that destroyed crops and forced Italy to import contaminated grain from the Black Sea.

·Greece
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There are simple decisions that mark entire lives. In the 14th century, when the climate changed in Europe due to volcanic activity, the Italian state cities used their connections with the Silk Road to bring food from the Black Sea region and avoid famine. And with that they blew up the worst pandemic in the history of humanity.Keep reading...

·Granada, Spain
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Volcanic activity could have exacerbated the spread of black plague in medieval Europe, according to a study by the Leibniz Institute of History and Culture of Eastern Europe (Germany) and the University of Cambridge (United Kingdom), published in ‘Communications Earth & Environment’. The authors suggest that climate cooling due to volcanic activity and subsequent famine led Italian cities-states to import grain shipments from the Black Sea regi…

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Traces preserved in trees indicate that the eruption caused a climate shock and led to a series of events that brought the plague to medieval Europe.

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delo.si broke the news in on Sunday, December 7, 2025.
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