Have you ever wondered why most disinfectants indicate they kill 99.9% or 99.99% of germs, but never promise to wipe out all of them? Perhaps the thought has crossed your mind mid-way through cleaning ...

The spread of the H1N1 flu, the "swine flu," is thought to spread from person to person through coughing or sneezing. Health officials encourage you to wash your hands often with soap and warm water.

Today, it is hard for us to fully appreciate the great revolution in medicine known as “germ theory” and the role that animal research played in its development. It seems impossible that people once ...

Germ theory is the idea that pathogens can invade the human body and cause disease — and it wasn't always accepted. Evidence for germ theory accumulated over time, and as it did, it butted against ...