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  1. Mold | Mold | CDC

    Sep 26, 2024 · Mold What to know Mold can look like spots of many different colors, and it can smell musty. If you see or smell mold, you should remove it. If mold is growing in your home, you need 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 | National Institute of Environmental Health Sciences

    Jun 5, 2025 · Mold is a microorganism and type of fungus that thrives in wet places. In nature, it forms on damp materials and in decaying organic matter. Outdoor mold reaches its highest levels in the …

  4. Mold - Wikipedia

    A mold (US, PH) or mould (UK, CW) is one of the structures that certain fungi can form. The dust-like, colored appearance of molds is due to the formation of spores containing fungal secondary …

  5. What is mold? And what causes it? Experts discuss. - USA TODAY

    Jul 24, 2025 · Mold is a type of fungus that thrives in moist environments, both indoors and outdoors. To the naked eye, it often appears as fuzzy, slimy or powdery patches that come in a variety of colors –...

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

    They can be found indoors and outdoors and are part of our natural environment. They play an important role in the environment by breaking down and digesting organic material. Also called fungi …

  7. Mold in House: Causes, Risks, and How to Prevent It - WebMD

    Oct 27, 2024 · Learn about the common causes of mold in home, the health risks it poses, and effective ways to keep your living space mold-free.

  8. What’s the Difference Between White Mold and Black Mold? - Angi

    Oct 20, 2025 · If you aren’t sure what type of mold is in your home, keep reading for a detailed breakdown of white mold vs black mold to see if one or the other is the culprit.

  9. Molds in the Environment - Johns Hopkins Medicine

    A mold is a microscopic fungus that grows and lives on plant or animal matter or on nonorganic objects. Most molds are made up of filaments and reproduce through the production of spores.

  10. When is mold a problem? You know you have mold when you smell the "musty" odor or see small black or white specks along your damp bathroom or basement walls. Some mold is hidden growing behind …