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There are many ways of classifying bacteria. One method is based on the cell membrane. In 1884, a bacteriologist named Christian Gram created a test that could determine if a bacterium had a thick, ...

Jackson Ryan was CNET's science editor, and a multiple award-winning one at that. Earlier, he'd been a scientist, but he realized he wasn't very happy sitting at a lab bench all day. Science writing, ...

Scientists at Duke University report they have developed a synthetic antibiotic that could be effective against drug-resistant superbugs and bacteria such as Salmonella, Pseudomonas, and E. coli.

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Quick, can you describe your grandparents?

Gram-negative meningitis is a form of meningitis. The term gram-negative refers to a way of differentiating bacteria. This type of bacteria is typically resistant to drugs and most available ...

Gram-positive bacteria show blue or purple after Gram-staining in a laboratory test. They have thick cell walls. Gram-negative bacteria show pink or red on staining and have thin walls. They release ...