In absolute numbers, they can be as small as 500nm but most of them are 2 um long. That's a million times smaller than you. That means that if bacteria were as big as a sand grain, you'd be 1000 times bigger
Microbes are everywhere. Click here to find out what microbes are found in which environment.
Pathogens are the microbes that cause disease. Find out which bacteria are harmless and which are beneficial. Did you know that most of bacteria are friends rather than foes?
Explore the different scenarios for the emergence of life on Earth.
Do I need to care about superbugs, bacteria in volcanos, or life in outer space?
If there is, what should it look like?
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Les bactéries sporulantes dans des environnements extremes