What are bacteria and are all of them bad for us?
Tiny Tenants
What are bacteria and are all of them bad for us?
Imagine a creature so small that millions could throw a party on the head of a pin and you'd never hear the music. That creature is a bacterium — a single living cell, all by itself, no brain, no bones, just one tiny bag of life going about its business. There are more of them on Earth than there are stars we can see, and right now, a vast crowd of them is living on you.
Bacteria are some of the oldest living things on the planet. They were here billions of years before dinosaurs, before trees, before basically everything. They figured out how to eat, grow, and split in two long before anyone else showed up. In a way, every other living thing arrived late to a party the bacteria had already been throwing for ages.
