Microbes

Health experts say kitchen dishwashing sponges should be replaced daily to prevent dangerous microbes. A study by scientists shows that sponges can harbor bacteria even after thorough cleaning. This could lead to issues like food poisoning and gastroenteritis.

December 10, 2025 由 AI 报道

Researchers have discovered that heterotrophic microbes play a larger role in fixing carbon in the deep ocean than previously thought, challenging long-held assumptions. Led by Alyson Santoro at UC Santa Barbara, the study reveals that ammonia-oxidizing archaea contribute less than expected to this process. The findings, published in Nature Geoscience, help explain discrepancies in carbon and nitrogen cycles in dark ocean waters.