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Earth

Searching for species that keep us healthy

Intestinal worms and bacteria, please 鈥� we're good at fighting off organisms that bring disease, but should we find species that benefit us too?

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Old folks’ stomach bacteria are secret to their health

Life

Gene switch that turns bacteria into mighty Hulk

Earth

Virus power harnessed to protect Red Sea coral

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Cobwebs shield the human gut from unwanted invaders

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Second strain of cholera found in Haiti

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Milk fats clue to inflammatory bowel disease

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Gut bugs confined to quarters by special immune cells

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Was humanity born in the mother of all plagues?

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Researcher death highlights dangers of pathogen work

Richard Din's death from meningitis shows how pathogens can escape the lab 鈥� the worry is that experimental H5N1 flu could do the same

Earth

Sauropod farts warmed the planet

Life

Magnetic bacteria create a biological hard drive

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Babies are born dirty, with a gutful of bacteria

Earth

Too-blue oceans: The invisible famine