You Can Run, But You Can't Hide

With more than 100,000 species worldwide, roughly a thousand of which are native to the United States, molds are literally everywhere on the planet, including Antarctica. In nature, these fungi serve as a catalyst—speeding decomposition and ridding the planet of megatons of dead plant matter. And some varieties even have a time-honored place within our homes. After all, you owe the penicillin in your medicine cabinet to a mold called Penicillium chrysogenum, part of the same genus as Penicillium roqueforti, the mold you can thank for that delightful Roquefort cheese stinking up your fridge.

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