Penicillin was the world's first antibiotic, a type of medication that kills or slows the growth of bacteria. After Scottish doctor Alexander Fleming discovered penicillin in a petri dish containing ...

While mold doesn’t have the best reputation, some types can actually be quite beneficial. Take Penicillium, for example—it’s the mold responsible for producing penicillin, one of the most important ...

The accidental discovery of penicillin by Alexander Fleming in 1928, when mold contaminated one of his petri dishes, changed the course of modern medicine, with antibiotics key to the decline of many ...