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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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What do a hummingbird, a moth, and a maple tree have in common?

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They all use a similar trick to fly.

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Okay, okay, a maple tree doesn't fly.

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But its seeds kind of do.

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Maples make those little whirlybird seeds you see spiraling down in droves each spring.

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Their papery little wings keep them aloft so they can find a good place to germinate and make a new maple.

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But how they manage to fall so slowly has been a bit of a mystery until now.

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Scientists filmed maple seeds as they wafted through a smoke-filled wind tunnel.

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And they found that a spiral of air develops on top of each falling seed's wing.

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That vortex generates lift, and acts like a miniature tornado that sucks the seed up.

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The study appears in the June 12th issue of the journal Science.

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The same type of vortex also helps bats, hummingbirds and insects soar.

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So it seems that plants and animals have both stumbled on the same aerodynamic approach to battling gravity.

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Which explains why the acorn might not fall far from the tree,

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but maple seeds can really go the distance.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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