Alcohol is used in disinfectants (think GermEx), and disinfectants are solely used to kill bacteria. And while we’re playing devil’s advocate, alcohol can also sterilize good bacteria, so it’s a toss ...

While there are plenty of weird animals in nature, some of the strangest organisms can only be seen under a microscope. Here ...

In hopes of seeing why a peppercorn tastes peppery, Antonie van Leeuwenhoek (1632-1723) soaked one in water and put it under a microscope ... the first bacteria ever observed.

Bacteria can be engineered to sense a variety ... these signals can only be detected by looking at the cells under a microscope or similarly sensitive lab equipment, making them impractical ...