Transmission Bubonic Plague Symptoms Pneumonic Plague Septicemic Plague Treatment Cases Statistics Bacteria Yersinia pestis Historical Impact Yersinia Pestis Bacteria Neolithic Period Historical Epidemiology Plague Symptoms Plague Transmission Plague Prevention Risk Factors Impact on Society Spread Yersinia Pestis Yersinia Pestis Bacterium Prevention Historical Context
Researchers uncover evidence that Neolithic farmers on Bornholm buried engraved stones as part of rituals tied to a climate disaster caused by a volcanic eruption around 2900 BCE.