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  1. Mold - Wikipedia

    Molds are ubiquitous, and mold spores are a common component of household and workplace dust; however, when mold spores are present in large quantities, they can present a health hazard to …

  2. What Are Molds? - US EPA

    Feb 4, 2025 · Molds are a natural part of the environment and can be found almost anywhere that moisture and oxygen are present. They belong to the kingdom Fungi and live in moist places such as …

  3. Mold | Mold | CDC

    Sep 26, 2024 · Learn what mold is, how to prevent it, and how to clean it up. There is always some mold around. Molds have been on the Earth for millions of years. Mold can get in your home through open …

  4. Mold | National Institute of Environmental Health Sciences

    Sep 10, 2025 · Most molds are not harmful. Some are used to make foods, like cheese and yogurt, or to manufacture medicines, like penicillin. A few species can be detrimental to human health. Some …

  5. Mold | fungus | Britannica

    Nov 6, 2025 · Fungi of the genera Aspergillus, Penicillium, and Rhizopus form mold and are associated with food spoilage and plant.

  6. Molds in the Environment - Johns Hopkins Medicine

    Common reactions to molds include nasal stuffiness, eye irritation, or wheezing when breathing. More severe reactions may happen among workers, such as farmers, who are exposed to large amounts …

  7. What are Molds? - North Central Distict Health Department

    What are Molds? Molds are microscopic fungi that live on plant or animal matter. They can be found indoors and outdoors and are part of our natural environment. They play an important role in the …