Back to the Middle Ages we go.
The Great Plague in London marks its 350th anniversary with the discovery of a mass grave of plague victims.
The plague, also known as Black Death, may have persisted for as long as 300 years in Europe. Scientists have taken a closer look at the bacteria that causes the sickness, Yersinia pestis, and have found it may have persisted in a previously unknown reservoir.
Scientists may have found the hotspots for the plague in the western United States.
No. You didn't time-travel back to medieval times.
In a recent study, reseachers found that human populations were affected by plague twice as early as thought, ancient DNA reveals new information.
A flea that's been frozen in time may possess bacteria that's the ancestor of the Black Death. Scientists have discovered a flea preserved in amber with tiny bacteria that could have eventually evolved into the dreaded strain of the bubonic plague.