Add Yahoo as a preferred source to see more of our stories on Google. Co-lead study author Ravneet Sidhu examines a human tooth at McMaster University’s Ancient DNA Centre in Hamilton, Ontario. The ...

This epidemic was known as Plague of Justinian—it occurred between 541 and 750 A.D., and is one of the earliest known ...

Plague, and the infamous Black Death, spread quickly for centuries, killing millions. Plague still occurs but can be treated with antibiotics.

A single 4,000-year-old sheep tooth has turned a long-running mystery about an ancient plague into a concrete trail of evidence, revealing how a deadly pathogen moved with people, animals, and trade ...

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(CNN) — One of the bleakest periods in medieval Europe was the plague pandemic known as the Black Death, which killed at least 25 million people in just five years. But the disease didn’t stop there.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. One of the bleakest ...