Add Yahoo as a preferred source to see more of our stories on Google. Plague, one of the deadliest bacterial infections in human history, caused an estimated 50 million deaths in Europe during the ...

Scientists have discovered how adaptations in a single gene helped the plague survive for hundreds of years. Responsible for the deadliest pandemic in history, the bacterium that causes the plague, ...

The plague — aka the Black Death, aka the Great Pestilence — is rarely contracted today, yet it recently infected a South Lake Tahoe resident. But before you put on your 17th century "air-purifying" ...

Plague, one of the deadliest bacterial infections in human history, caused an estimated 50 million deaths in Europe during the Middle Ages when it was known as the Black Death.Video above: How did ...