The word 'virus' gets tossed around a lot. Here's what actually counts, what to watch for, and how to stay two clicks ahead A computer virus is a type of program that, much like a regular virus, ...

Besides serving as food for certain microbes, viruses perform some helpful functions that remain poorly understood. A ciliate, a type of single-celled microbe, swims next to Sphagnum moss, amplified ...

It’s a common, straightforward idea in science: When a viral, bacterial, or parasitic pathogen sneaks its way into a host and tries to infect cells, the immune system detects its presence and mounts a ...