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.

Unlike germs, however, it can be seen under a blacklight, enabling Rober to track how it spreads through his day-long experiment in a classroom. The teacher was doused with the invisible powder prior ...

How many bacteria live on a subway seat? What about on your wallet? In your dog's mouth? These are all questions that TikToker @the_lab_life1 endeavors to answer. By taking samples from everyday ...