That’s gross. It’s hard to believe that there is something dirtier than a public toilet bowl — but there is, and it’s something that travelers use several times a year. The wheels of a suitcase are a ...

From asteroids the size of football stadiums to nuclear war and man-made pandemics, it can seem as if humankind is in ...

Researchers say about three-quarters of gastric cancer cases worldwide are caused by the common bacteria Helicobacter pylori ...

Closely related bacterial species use different strategies to build their cell walls, an international team of scientists led ...

In the United States, we have many dangerous insects. Test your knowledge here and see if you know these 15.