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This is Scientific American 60-Second Science. I'm Katherine Harmon.Got a minute?

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Mushrooms must scatter their spores to make little mushrooms.

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And we've long assumed that they rely on a friendly breeze for spore spreading.

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But a new study shows that mushrooms can create their own spore-casting wind.

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Fluid mechanics researchers trained high-speed video cameras on common Shiitake and oyster mushrooms.

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The scientists discovered that the mushroom spores floated off even when the air was calm.

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They enlisted mathematical models to solve the mystery.

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Turns out that before the spore dispersal, the mushrooms released water vapor.

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This moisture cooled the air around the 'shroom, causing a convective dynamic that got the air moving.

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Just this faint fungal breeze was enough to carry the spores away from the parent.

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The findings were presented at the Annual Meeting of the American Physical Society's Division of Fluid Dynamics in Pittsburgh.

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This discovery suggests that mushrooms aren't simply in a race to produce the most spores.

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Evolution also engineered a good way to spread them.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Katherine Harmon.

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