Some fish have bacteria on the brain. Wild and lab-grown members of the salmon family including European rainbow trout, Chinook salmon and Gila trout harbor active microbial communities inside their ...

Scientists have discovered the strongest evidence yet that healthy vertebrates can have brain microbiomes. Samuel Velasco / Quanta Magazine The original version of this story appeared in Quanta ...

Bacteria are in, around and all over us. They thrive in almost every corner of the planet, from deep-sea hydrothermal vents to high up in the clouds, to the crevices of your ears, mouth, nose and gut.