It is a fact that mold is everywhere; it is inside, outside, in the air that we breathe, on our clothes, and on our bodies. Mold can grow in most habitable climates around the world. We as humans can do little to totally eliminate mold in the world, but we actually don't want to.
Mold and other various forms of fungi play a critical role in the balance of nature. If we eliminate mold completely from the world, we would begin to be overrun by dead organic matter. Fallen leaves, dead wood and other organic materials will continue to pile up in the environment. Mold is important in nature to provide the decay of these organic materials, and allowing this decaying matter to enter back into the environment and provide a food source for future growth of vegetation. We also use different molds for other human good. One species of the mold penicilium (Penicilium Notatum) is used to manufacture penicillin. There are other molds which are important in the manufacturing of wine, bread, cheeses and other foods.