Biofilms work so well, in fact, that they can increase antibiotic resistance hundreds to thousands of times above what’s normal, Zaman said. “Biofilms are pretty nasty to get off because they ...

This story appears in the September 2017 issue of National Geographic magazine. The Brazilian pepper tree, an invasive plant in the southern United States, is showing great potential in the fight ...

The strongest natural antibiotic for tooth infections While ... that an herbal mouthwash containing clove, basil, and tea tree oil may help reduce bacteria associated with dental plaque, cavities ...