How Was the Black Death?

The Black Death is believed to have been the result of plague, an infectious fever caused by the bacterium Yersinia pestis. The disease was likely transmitted from rodents to humans by the bite of infected fleas.

How bad was the Black Plague?

The Black Death was so extreme that it's surprising even to scientists who are familiar with the general details. The epidemic killed 30 to 50 percent of the entire population of Europe. Between 75 and 200 million people died in a few years' time, starting in 1348 when the plague reached London.

What happened during the Black Death?

The plague arrived in Europe in October 1347, when 12 ships from the Black Sea docked at the Sicilian port of Messina. People gathered on the docks were met with a horrifying surprise: Most sailors aboard the ships were dead, and those still alive were gravely ill and covered in black boils that oozed blood and pus.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.