A plague that swept through Eurasia for 2,000 years – millennia before the Black Death of the Middle Ages – has only ever been detected in human remains, until now. For decades, it has been unclear ...

Cholera remains a major global public health challenge, with an estimated 1.3 to 4 million cases and tens of thousands of deaths reported worldwide each year. Caused by the bacterium Vibrio cholerae, ...

Scientists for the first time have found strong evidence that RNA and DNA could have arisen from the same set of precursor molecules even before life evolved on Earth about four billion years ago.