A mutation is a change in an organism’s genetic material. A virus survives by finding a host and using its living cells to ...

It’s been nearly eight months since avian flu was first detected in U.S. dairy herds, and cases in both cows and humans continue to pile ...

The Lao government is “profoundly saddened” by the deaths of foreign tourists from drinking alcohol contaminated with ...

The siblings both needed the same operation because of a birth defect that can cause the skull to grow abnormally.